Most polarizing films? The thread title is prejudicial. We're looking at titles with opinions about them grouped at the extremes. So is that polarization caused by the film or a reflection of it? I'm pretty damn sure it's some of both, probably even mostly the latter, but labeling them polarizing suggests that the latter aren't to be considered....rather, in fact, they should be ignored.
If a film promotes the Truth, how is it a polarizing film, unless the Truth polarizes us? Is The Help polarizing, or Inherit the Wind? Only if one side supports the lies.