That is incorrect. That is a devisive narrative that some on the far-right would like you to believe.
"...there is no data showing trans people are more prone to violence or to committing mass shootings. Transgender people are more likely to be victims of violence than others."
"The Violence Prevention Project at Hamline University studied mass shootings ... found that males were the perpetrators in 98% of the shootings, female shooters accounted for 2% of the attacks and transgender people accounted for less than 1%..."
https://www.politifact.com/article/2025/sep/09/trans-people-mass-shootings-gun-violence/