Shouldn't you start with films such as Birth of Nation which was like a KKK promotional movie? I never understood why it got so much praise. Looks as bad as Citizen Kane but some people love that film for some reason. It nearly put me to sleep in film class I took in college awhile back.
I don't think we should be banning anything. Just don't watch it if you don't like it. I don't like super hero movies anymore except maybe Deadpool but I don't think they should be banned. I just avoid them.