Akka
Moody old mage.
I dunno...The evidence that bothering to read what you argue against is something you consider to be "beneath you" is mounting. What I actually said was that if everyone thought that punching someone who spews hate in the face was appropriate people would stop spewing hate. They would even stop spewing hate at ephemeral groups like "the nazis." But when someone stands on a street corner advocating for "racial purification" they would have to consider the very real possibility that someone might accurately recognize they are spewing hate (which in fact they are well aware they are doing) and punch them in the face.
From both context and construct, it seems pretty obvious to me that the last paragraph is a direct following of the second, and "spewing hate" is an example of "being a jerk" but that the core idea is still "punching a jerk in the face".Being a jerk is no more "justifiable" than a physical attack. Being a jerk tends to spread more. Being a jerk tends to have longer lasting effects. Being a jerk almost always lasts longer. If being a jerk is met with physical violence that the jerk doesn't like they have a very simple option called "don't be a jerk."
If "I don't spew hate but I immediately punch people who do in the face" were the norm the world would be a much better place. Not because it would be filled with people punching people in the face, because it wouldn't. But it would be filled with people making at least a cursory effort to not spew hate.
Anyway, even if I accept your claim that punching is to be about "spewing hate", the problem still stays : who defines when someones starts "spewing hate" ? I can rail pretty hard about video game editors who dumb down their games for casual audience, does that count as "spewing hate" ? Does someone who got fired throwing a litany of insults about his boss is "spewing hate" ? Is a cheated spouse shouting all kind of death wish about the infidel one is "spewing hate" ?
Again, the problem is about how we end up implementing the rule. I can accept a trial with a jury to make somewhat informed decision about that (this is actually how it works, hate speech is punishable IIRC), but not a random guy in the street who gets to decide if the pretext is good enough or not.