I really don't think racism is making a bit of a comeback at all. I honestly couldn't tell you the last time I heard anyone use a racist term either in my working or personal life whereas as a teenager or when I first started working in the early 2000s you still got a bit of casual racism. Even people referring to, for example, Chinese restaurants in a derogatory manner has stopped completely I think.
The issue now in my opinion is that more idiots have more ways to be heard with all the different communication methods and the ease at which any individual comments can be heard worldwide. What I'm going to say next I'm not too sure if it will read the right way but when you think about it the fact that you only see a couple/a few videos each couple of weeks of someone being outright racist (and thats worldwide) thats not a bad average.