It absolutely is and you ought to be ashamed of yourself for defending it. The mentally ill are hurt deeply when you use stereotypes that they are violent, dangerous and lack agency to absolve evil monsters of their actions. What you’re doing is wrong and you need to stop.
Punishing evildoers doesn’t hurt me, it only helps me. What does hurt me and millions of other Americans is when looney-bin cultists like you take the worst offenders and exploit them to manipulate and bully their victims and the victims’ supporters into caving to your insane demands just so you can make yourself feel better. That’s what actually hurts people.