Right with you. This is illegal, plain and simple. Acts like this should not be celebrated. No matter if it's against the 'bad' guys.
Who cares? The question is whether it's wrong.
Good plan. What could possibly go wrong with it? After all, everyone capable of coercing us of anything must share our morals and ethics.
But in particular, I am especially wary of the "personal morals and ethics" of people making broad generalizations like you just did.
Fortunately, I know somebody who's perfectly entitled to enforce his personal morals right back at you. And yeah, I am aware that you could do the same thing, but you also appear to believe that to do so would make you a bad person. So it's your choice, really: Submit, Be Good, or Be Bad.
This kind of hacking is a serious felony in all OECD Annex-1 countries. That's a very different thing.