Earlier quoted context omitted.
There's nothing wrong with inciting or carrying out justified violence—which is to say, a violent response to similar violence practiced by others. Your examples of murder and theft, for example. A murderer cannot rationally object to being put to death; a thief cannot argue against being fined without self-contradiction. The problem is unjustified violence. And I agree with you that most proposals for new laws (incl…
The problems arises not in the easy to agree laws (murder, theft) or the easy to condemn laws (ban on homosexuality), but with the ones which are debatable on if responding with violence is justified. Many would say that violence against pot dealers isn't justified, but what about heroin dealers? What about opiate dealers? Pot dealers who sell to teens?
None of your "debatable" examples would be justified because the actions you are proposing a violent response to are not themselves violent. Even when the original action is violent, the response must be proportional: applying the death penalty for theft would not be justified because it isn't a response in kind.