> justify the violence

"If you make reasonable discourse impossible, then unreasonable discourse becomes inevitable."

What do you stand to gain in running defence for the trans radicals on the fringe? They hold extremely unpopular views. If it comes to them being violently suppressed by the state, they will have no one from the out-group and not even the moderates from the in-group coming to aid, and will have only themselves to blame for this. If you do not see it this way, then chances are you are in an echo chamber and are prevented from perceiving reality correctly.