I'll give you the worse ones, primarily to ward you off from them.
AskReddit - Sometimes you'll get some thought-provoking questions. But a lot of the time, you'll find heaps of over redundant questions, all spread by just minutes to hours apart. A lot of questions I've noticed recently, are people so quick to karma farm that they'll misspell their questions and just go for low-hanging fruit kinds. And then there'll be questions that are sex-driven, ragebaiting and softly bordering around racism/sexism.
r/TooAfraidToAsk - Another cesspool of questions where people ask WAY too many sex-based ones and stupid plain questions that a simple 5 minute google search would take to answer. People love asking troll bait questions there.
Quora - It can't stop nagging you to give them your info if you try reading answers on any question. It's like AskReddit but 24/7 and the quality is a little above. But more or less, you'll find yourself in the same jam.
Hitler is the kind of person you'd revive, kill again and revive to kill again until he hits the number of holocaust victims. No one single solitary death is sufficient enough.
That goes for any other leader that has allowed their citizens to die or even allowed their soldiers to die recklessly.