(1) The filmmakers do far too much hiding of their own opinions in the various opinions presented here.
(2) I bet however, that they do believe things like "black people can't be racist". Exposing the ever-self-serving corresponding absurdity, being as simple as looking up the word "racist" in the damn dictionary. Instead of putting up a highly-specialized/strawman definition, only to pretend that it's THE definition.
(3) There are actual slaves in the world. Right now. Millions of them. Moreover, even in the US, there is both very real slavery and very real racism. Not dumb college kids responding to faux-civil-rights-crusader bait and wearing some dumb costumes at some dumb private party. No. People are actually being forced away from their health and freedom based on race and class - in the US - as we speak. Black people, brown people, Asian people, even white people (see: Eastern European sex trafficking), etc. Exceedingly few of these grim realities, have very much to do at all - with what's depicted here. And if one is really concerned about such matters - one would find a way to reflect (at least SOME of) them in one's film. If however, one is selfishly concerned instead with the minutiae of one's own exceedingly-privileged (by world and even US standards) existence, while wanting to disguise oneself as a hard-issue-tackler - one would make a film just like this.
(4) And if burying one's head this far up one's own rectum is an absolute must - I'd at least ask that there's a clear corresponding point. Which brings us back to (1) above.
(5) Perhaps I'm being too harsh, but when people pretend to care about higher ideals, while their efforts are all too obviously aimed instead at merely serving themselves - I have trouble seeing anything else. Whether it's Fox News with their constant cry-bullying. Or what madness Nazi atrocities and such have been used to justify in the middle East. Or such, admittedly-milder, yet all-too-similar cases.