Congresswoman's Fugitive Security Guard Killed in Standoff Had Criminal Past

Diamon-Mazairre Robinson, who used the alias Mike King, had an extensive criminal history and was under federal investigation when he was shot by Dallas SWAT.

Mar. 15, 2026 at 5:26am

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A security guard who worked for U.S. Rep. Jasmine Crockett had an extensive criminal history dating back to 2009 and was under federal investigation when he was shot and killed in a standoff with Dallas SWAT. The guard, identified as Diamon-Mazairre Robinson, had used the alias Mike King to conceal his past and secure a position protecting the congresswoman, including on her failed Senate campaign.

Why it matters

This case raises questions about the vetting process for security personnel working for elected officials, as well as concerns about repeat offenders and the use of aliases to evade law enforcement. It also highlights the risks that can arise when individuals with criminal histories gain access to positions of trust and authority.

The details

According to reports, Robinson had been arrested numerous times between 2009 and 2012 on charges including theft, but only faced minor penalties like fines and probation. He used the alias Mike King to conceal his criminal past and gain employment as a security guard, including a position protecting Rep. Crockett. Robinson allegedly told officers he was a U.S. Capitol Police detective, leading to a federal investigation into his alleged impersonation. He was also believed to have run a website offering off-duty police jobs.

  • On March 11, 2026, Dallas police tracked Robinson to a parking garage at the Children's Medical Center, where he barricaded himself in a car.
  • After police used tear gas to force Robinson out of the car, he jumped out and pointed a gun at officers, who then fatally shot him.

The players

Diamon-Mazairre Robinson

A 39-year-old security guard who worked for U.S. Rep. Jasmine Crockett, using the alias Mike King to conceal an extensive criminal history dating back to 2009.

Rep. Jasmine Crockett

A U.S. Congresswoman from Texas whose security guard, Diamon-Mazairre Robinson, was killed in a standoff with Dallas SWAT.

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What’s next

The Dallas Police Department is continuing to investigate the circumstances surrounding Robinson's death, including his criminal history and how he was able to gain employment as a security guard for the congresswoman.

The takeaway

This incident highlights the importance of thorough background checks and vetting processes for individuals in positions of trust, especially those tasked with providing security for elected officials. It also raises concerns about the potential for individuals with criminal histories to exploit vulnerabilities in the system and gain access to sensitive positions.