Well, there was the so-called STEM school shooting where one of the perps was a female to male troon so he would be the first MTF.
From Wikipedia:
"One perpetrator is Alec McKinney, a
transgender boy who is listed on the
court docket as "Maya Elizabeth McKinney". He was 16 at the time of the shooting."
Though they only managed to kill 1 person with 8 injured... 2 of which was done by the police lmao
Alec/Maya got sentenced to life so I can't wait for them to go into an adult male prison in a few years...