Mel Gibson is suffering the consequences for being such an angry dude.
Mel was cast in the Hangover sequel, but was immediately axed because the cast and crew didn’t want him in the movie. He was replaced by Liam Neeson.
Mel is reportedly very angry that they didn't give him a chance to redeem himself.
An insider says, "He doesn't understand why Mike Tyson, a drug user [and convicted rapist, as EW.com points out] who turned his life around, was given a chance while Mel was kicked to the curb. Everybody deserves a second chance."
Good point! This was a good chance for Mel Gibson to make a comeback, but it seems like people are just sick of forgiving him.