As for the issue of how far films contribute to racism and the rest of the nastiness that has gone unrecognised, that's a pretty moot pint. The labels change, and that change matters, but only to a very limited extent. So long as people are downgraded, whatever label they are given is going to serve to amplify that.

Changing labels can help, but the new labels soon get the same stigmatising quality as the old. Only when the downgrading is gone for good does that change, and when, and if that has happened, the labels don't really matter anymore.

But that's a wider subject than whether or why good films are not to be seen.