I don't care how you were raised, but two wrongs don't make a right, and unilateral, extrajudicial, extraterritorial assassinations of political opponents are wrong, even if you shout "terrorist!" while murdering
imagine if such shouting made murder okay, like a secret, magical incantation any arbitrary thug could recite to immunize oneself from guilt - it's a ridiculous concept when you think about it!
I'd say this is different from the trolley problem, because, again, unilateral, extrajudicial, extraterritorial assassinations of political opponents are wrong, even if you shout "terrorist!" while murdering
they are always wrong
it doesn't matter if you also did a good thing, it doesn't even matter if the good thing was related: you aren't allowed to do the wrong thing, period, even if you really, really, really want to, even if you think you have a good reason to break the rules and do wrong
and as to your first question, eh, could be for some examples, but it'd be a distraction, as the answer doesn't matter, because the case we're discussing definitely wasn't either one