I really don't get the hate he gets, yeah he's quite the tyrant, can't deny it (but it's a good thing imo in this case).
But the dude killed powerful corrupt high-ups on one of the best known planet in the universe, freed the people there, won a huge-ass battle everyone thought they'd lose, yet he gets hated uber-hard ?
I mean yeah ok, author, you want to show some kind of unfairness for some reason but it's just way too much at this point, people throwing stuff at him, wtf.
He's one of the most powerful dude in the whole known universe, even on our primitive Earth no one would dare throw a nail even to someone like our famous Kikim from NK.
Mocked from behind a screen with parodies etc, yeah, but openly in a public event ? Wew.