Punishment of the past: Gunn and Guardians

Recently old tweets (2008-2009) by James Gunn, writer and director of 'Guardians of the Galaxy' came to light and Disney fired him from completing the third in film in the series. The tweets contained "jokes" about pedophilia and rape, obviously inappropriate and not in line with Disney's ethos. Also in light of the recent Hollywood abuse allegations the industry is quite sensitive about such things.

However, the question here is a little muddled, as obviously Gunn has apologised, but not only recently, but previously. He has responded previously to his early career behaviours and has also called himself out over the years for aspects of his "humour." How genuine this is, is of course difficult to gauge. Yet the question remains, how much of a person's past actions should they be punished for? What behaviours are completely inappropriate (sexual abuse, etc.) and what is the work of youthful foolishness? I am still on the fence concerning Gunn myself, but I think in an era of calling for greater repercussions in Hollywood for actions we do need to talk about the lines. Because there is the risk of making every controversial action anathema, which is also not socially healthy as criticism and challenges are what help drive change.