Did they crisis that out too? I thought is was left in? If so, my bad. God I hate those crisises. Oh you mean because of the alternate people? If he used that, that would have probably flew, but I believe he said that camdus cloned an evil luthor and people bought that. Not really a great story or idea. Maybe I have my time line wrong on this so I'll concede the point. Though I will say superman fights lex all the time, so the DCU citizens just disregarded all that, or don't trust superman's judgement very much.
I'm talking about when Luthor used Alexander Luthor as a scapegoat following Infinite Crisis. I also admit that I don't really know too much about the mid-90s Cadmus stuff that you're talking about where Lex had that full head of red hair, so I suppose some really stupid excuses could have come up at the time.
Superman didn't actually
fight Lex Luthor much. At least not directly, and never in front of ordinary people. Luthor schemes and he hires out thugs, he doesn't really get his own hands dirty and certainly not in fisticuffs with the most powerful being on the planet. Now obviously everyone was aware that Superman and other heroes didn't seem to like Luthor much but, again, there just wasn't any
evidence behind anything. If Superman had gotten a bunch of his friends and denounced Luthor in front of the world -- again, without any proof of his wrongdoings at all -- it would have actually seemed like the big powerful inhuman gods were picking on the poor human guy who dared to speak out against them. And Luthor of course played that up all the time.
Nick Fury: Agent of SHIELD. They capped people all the time, often invading other countries to take out people. Nick didn't read rights he straight up shot people. Also Secret War, I know it's bendis but the action wasn't very out of character for Fury. As far as the murder helpless kittens argument, Maria Hill isn't a joke for a combatant and shouldn't be treated as someone unable to defend herself as she's shown time and again. Just cause she seems down doesn't mean she's not a serious threat. You react accordingly and protect yourself, and SHIELD doesn't read people their rights, they have no such authority or doctrine.
You should really read this issue that you're mitigating, because it doesn't happen like that at all. Maria Hill was handcuffed, onboard their plane, and she was unconscious right up till the moment they were about to kill her because they had whacked her with a gun after she
surrendered to them. This wasn't a combat situation, they weren't "protecting themselves." It was coldblooded execution...hell, not even that, it was coldblooded murder of a compliant prisoner, pure and simple. I challenge you to find me a scene where Nick Fury or anyone else under his command killed a
restrained prisoner. Not "straight up shot someone," not "invaded another country," but shoots and kills a noncombatant prisoner that had surrendered already and that was handcuffed in your vehicle.