You seem to not understand the deterrent effect of being the target of a murder while somehow fully understanding the deterrent effect of being the target of a murder trial.
I'm having a hard time interpreting that position as anything but a bad faith argument.
The YouTube algorithm recommended me videos from the guy that makes these shirts. I think he's pretty popular. Only watched a couple of his videos. Doesn't seem like his channel promotes a lot of violence overall... except for the shirts. He really likes those shirts though.