I'm sure this has been covered in other threads before, but with the new Kraven movie coming out, I got to thinking about how fast we as viewers, and even more importantly, the heroes in our favorite comics, accept former villains who turn over a new leaf. In real life, would we accept multiple offense murderers such as Magneto, Deadpool, Venom, and to a certain extent, the Punisher? I mean, I'm sure there most of our heroes have gone down this road at one time or another and justified their actions (or the writers have at least), and I'm all for redemption, but is there a point where someone cannot be forgiven?
Do groups like the Avengers and X-Men have to justify their questionable membership to the public?