Is a glass of water or a punch in the face always wrong?
Absolutely not. I’m not some syrupy idiot who believes the cliché that violence is never the answer. Violence is a powerful tool, and when used for good, it is the purest form of necessary evil. (Of course, what people believe to be good is inevitably where we get into trouble when it comes to justifying violence.)
As for me personally, I believe hurling drinks and punching people to be generally wrong, but I also believe punching Nazis like Richard Spencer in the face or throwing water on garbage monsters like Tomi Lahren to be highly individualistic forms of civil disobedience, and in those specific instances, there is a greater good to consider. That said, it’s still assault, so don’t go around doing that kind of shit without being fully aware of the potential consequences. It is against the law to assault people, even shitty people, (as well it should be), but just because something is illegal, that doesn’t make it inherently wrong.
Also consider this: if the drink is hurled or the fist is thrown on impulse and out of anger, then you’re gonna lose most of your moral high ground. Outside of genuine self-defense, it is incredibly difficult to justify violence that stems from impulse or anger. Another thing to consider is proportionality. Throwing water on Tomi Lahren and ruining her night is a proportional response to her presence at the bar, whereas throwing acid on her would be completely unjustifiable. Punching Richard Spencer in the face and ruining his day is a proportional response to his presence at the Nazi rally, whereas shooting him in the face would be completely unjustifiable. Outside of total war, it is impossible to justify violence that isn’t proportional.