Taxi driver

Taxi driver happens to be one of my favorite movies. Personally, I have a very thorough belief that everyone in this film is guilty of a crime except for Iris. While the general consensus seems to be that Travis is a hero. His liberation of Iris was almost predatory. In fact his interest was  made clear after Betsy's complete rejection. It seemed to me he wanted an innocent good girl that was also somehow sexual by nature. She is to be an honest woman whilst completely fine with sexual escapades. I think he found it in Iris. And absolved himself of his guilt by saying he could/ would save her from her pimp and essentially herself.
She was young and innocent so she was inherently good. The fact that she was a prostitute damn near enraged him because somehow. This girl was the only good in the world. And he would fix it. And I think he knew, which is why in the end he tried to commit suicide; but of course there were no more bullets.
Coming out of that comma hailed a hero. Absolved him of any guilt. And I think that's part of the brilliance of the film.
Travis undergoes a complete evolution and you decide what exactly he has evolved into. Personally I believe it is idly in the end that he becomes a real anti hero. You know, assassination attempts aside.