Wednesday, May 7, 2025

Dr. Demetrick "Tre" Pennie: Public Safety Advocate

Dr. Demetrick "Tre" Pennie: Public Safety Advocate


Demetrick "Tre" Pennie, professionally recognized as Sergeant Pennie, stands as a nationally respected voice in American law enforcement advocacy. A veteran of the Dallas Police Department, college professor, and former congressional candidate, Pennie has built a career dedicated to public service, justice, and the support of law enforcement personnel across the United States. In addition to his long-standing police service, he is the founder of the National Fallen Officer Foundation, a nonprofit organization dedicated to supporting the families of police officers killed in the line of duty.

Early Life and Education

Born and raised in the historically Black community of Acres Homes in inner-city Houston, Texas, Demetrick Pennie was brought up by his grandmother, Allene Pennie. Growing up in a high-crime area shaped his early views on justice and public safety. A tragic turning point in his life came during his teenage years when he witnessed the shooting death of his cousin, Jacqueline Smith, just one day before her wedding. This traumatic incident had a profound impact on him, instilling a desire to protect others and ultimately leading him toward a career in law enforcement.

Before joining the police force, Pennie served honorably in the United States Army from 1995 to 1999. While serving his country, he also pursued academic achievement. He earned an Associate Degree in Administration of Justice from Honolulu Community College in December 1998. After completing his military service, Pennie joined the Dallas Police Department in 1999, beginning what would become a distinguished 22-year career in law enforcement.

Pennie continued his academic journey alongside his law enforcement career. In 2003, he received a Bachelor’s degree in Criminal Justice from Midwestern State University. He later earned a Master’s degree in Counseling from Prairie View A&M University. Never one to rest on his laurels, Pennie completed a doctoral degree in Higher Education from Texas Tech University in 2017. His dissertation, titled “Exploring College Leaders’ Critical Incident Experiences Pursuant to Improving Campus Safety Policies during the Mass-shooting Era,” addressed the rising threats of mass shootings and the radicalization of individuals online, with specific attention to groups like Black Lives Matter. His work explored the role of college administrators in preventing campus violence and implementing safety policies in an era plagued by gun violence.

Academic and Public Service Career

While serving on the Dallas police force, Pennie also contributed to academia as an adjunct college professor, teaching criminal justice and public safety courses at two universities. His academic engagement complemented his real-world experience, allowing him to provide students with unique insight into law enforcement practices and policy.

Pennie also held the position of President for the Dallas Fallen Officer Foundation, where he worked to provide support to families of officers killed in the line of duty. Following his service in that role, he founded the Texas Fallen Officer Foundation and later the National Fallen Officer Foundation, expanding his mission nationally.

Pennie has authored numerous scholarly articles, journals, and opinion pieces on topics related to public safety, terrorism, and police-community relations. His work has been cited in legislative discussions, judicial proceedings, and academic forums. He has become a go-to expert for policymakers addressing issues of crime, radicalization, and officer safety.

Law Enforcement Advocacy and Legal Actions

Demetrick Pennie’s commitment to public safety led him to take bold legal actions in defense of law enforcement. In 2016, following the tragic shooting of police officers during a protest in Dallas, Texas, Pennie filed a federal lawsuit against Black Lives Matter and other high-profile individuals including Barack Obama, George Soros, Louis Farrakhan, and Al Sharpton. The case, Pennie v. Obama et al., alleged that the named parties had incited violence against law enforcement. While controversial, the lawsuit garnered national media attention and underscored Pennie’s deep concern over rising anti-police rhetoric.

In 2017, he filed another lawsuit, Pennie v. Twitter, this time targeting major social media platforms Facebook, Google, and Twitter. The complaint asserted that these platforms provided material support to terrorists by allowing radical content to flourish, which contributed to the radicalization of individuals involved in the Dallas police shooting. While the legal outcomes did not result in liability for the tech companies, the case highlighted the growing concern over online radicalization and the role of digital platforms in shaping extremist views.

Congressional Testimony and National Recognition

Pennie’s expertise in law enforcement and public safety earned him invitations to testify before the U.S. House Judiciary Committee and the U.S. Senate Judiciary Committee. On February 17, 2022, he spoke to the House Judiciary Subcommittee on Crime, Terrorism, and Homeland Security, emphasizing the increasing danger police officers face due to online incitement and lenient criminal sentencing practices.

On July 26, 2022, he testified before the Senate Judiciary Committee, where he provided an in-depth account of the origins and outcomes of the Defund the Police movement. He detailed the radical agenda of Black Lives Matter, discussed the damage and destruction caused by the George Floyd protests, and called for stronger protections for law enforcement officers. According to his testimony, the protests resulted in over $2 billion in property damage nationwide, numerous injuries to police officers, and even the takeover of a police precinct.

Later that year, Pennie and the National Fallen Officer Foundation filed an amicus brief in the U.S. Supreme Court case Gonzalez v. Twitter. The case challenged whether tech companies could be held liable for hosting terrorist content that may have influenced violent acts. Pennie’s involvement once again positioned him at the forefront of national discussions about the intersection of public safety and digital platforms.

Political Career and Future Aspirations

In 2016, following the Dallas shooting tragedy, Pennie began his foray into political activism. Motivated by the increasing hostility toward law enforcement and the lack of political support for police officers, he began raising awareness about national security threats and the risks facing law enforcement communities.

In 2020, he ran for Congress in Texas’ 30th Congressional District as a Republican, challenging long-serving Democratic incumbent Congresswoman Eddie Bernice Johnson. While he was unsuccessful in his bid, the campaign brought his law enforcement advocacy to a broader audience and deepened his involvement in national policy discussions.

Undeterred by his initial defeat, Pennie has continued to stay politically active. In 2023, he filed with the Federal Election Commission to run for Congress again—this time in Texas’ 3rd Congressional District against Republican incumbent Keith Self, where he placed third in the Republican primary race. 

Pennie was later appointed to a state-government position on the Texas Lottery Commission's Charitable Bingo Commission, where he oversaw regulatory reforms for the state.  

Monday, May 11, 2020

Dallas Fallen Officer Foundation Attends National Night Out


Dallas, Texas - On October 1, 2019, Dallas Fallen Officer Foundation and Sergeant Demetrick Pennie accompanied the Dallas Police Department in attending National Night Out. 

National Night Out is an annual neighborhood-based crime prevention initiative that gives communities across the country an opportunity to show their neighborhood spirit and strengthen partnerships with local police departments. National Night Out was designed to heighten crime prevention awareness, increase neighborhood support and unite communities. 

Last year was the 36th anniversary of National Night Out. The event was celebrated by hundreds of thousands of people across the United States in all fifty states including U.S. territories and military bases. Community members hosting block parties, festivals, parades, cookouts, and safety seminars to help facilitate the effort. 
Dallas Fallen Officer Foundation donated first aid kits to community groups and Sergeant Pennie talked to the students about the importance of community service, safety, and support for community policing. 

Learn more about the Dallas Fallen Officer Foundation at:




Tuesday, April 23, 2019

Remembering Dallas Police Officers Killed in the Line of Duty


A nationally recognized commentator on issues related to law enforcement, Demetrick Pennie serves as a Dallas police sergeant. He is also the president of the Dallas Fallen Officer Foundation and the executive director of the Texas Fallen Officer Foundation. In these roles, Demetrick Pennie advocates for law enforcement and for the families of officers killed in the line of duty. Last July, members of the Dallas community had the opportunity to participate in several events for five officers who were killed in an ambush during a peaceful protest.

On July 7, 2016, approximately 800 people gathered in the El Centro College area of Dallas to protest the killings of Alton Sterling and Philando Castile, shot by police in incidents in other states. Some 100 police officers were assigned to provide security at the otherwise peaceful event. In an ambush-style shooting, the officers - Lorne Ahrens, Patrick Zamarripa, Michael Krol, Michael Smith, all of the Dallas Police Department, and DART officer Brent Thompson - were killed. To mark the second anniversary of the killings, several events were held. 

-The Dallas Police Department paid tribute to the fallen officers with a service of prayer and song. Various faith leaders from the community participated in the event. It concluded with a moment of silence and the release of white balloons in memory of the victims.

-Over 300 motorcyclists participated in a ride to remember the police officers. All proceeds were donated to the families of fallen officers.

-The Run for the Blue was a 5K event that also supported the families of those who have died in the line of duty. 

Plans are in place to erect a monument to the fallen officers outside the Dallas Police Department headquarters.