Movie Endings That Sparked Controversy

I've been in theaters when people clapped at particular movie scene (Jennifer Hudson in Dreamgirls) or at the end of the movie.  I've even been in a movie where the audience sat still at the end, shocked and stunned (I'm looking at you Avengers:  Infinity Wars).  But have you ever watched a movie that the ending just made you MAD (hello Cabin Fever)?