Stark for his stance, but he obviously went crazy at the end because of what was revealed in the final act and that wasn't cool of him to do (even though I understand why he wasn't acting rationally).
Still, registration and being kept in check is what should be happening if a superpowered group existed. They need accountability.
So, it'd be okay for them to destroy a city block if the government okay'd it?
No, but it would certainly be more accountable than them leveling a city block because they personally felt like it.
lol...they aren't doing it because they feel like it.
Literally everything the Avengers have done up to this point was because their personal egos said it was "the right thing to do", which has been shown to not be an immutable matter of fact.
Kim Jong Un probably thinks that attacking his enemies and developing his nuclear program is "the right thing to do". See the problem? You can't just put all your eggs in the basket of "well they seem to be pretty good guys so far".
Kim Jong Un isn't that stupid, lets just put that out there.
And as far as the nuclear program goes, you can't really sanction someone without being able to go there. ---