>videos that contain inflammatory religious or supremacist content
It's very easy to claim content is inflammatory or supremacist . This will be highly subjective, which is the problem.
I personally know people here in the bay area that would have no problem labelling lots of campaign talk by Trump with those tags.
also they have to determine these norms for the whole planet (without North Korea), now every attempt so far that tried to set cultural norms for the whole world has failed, lets see if they do better.