The whole world seems to have gone mad this year. Trump, Brexit, cops shooting black people, black people shooting cops, IS, a rise in the extreme right across Europe, now gawd knows what in Munich. I think it'll get worse before it gets better.
Most of this is not new. The only difference is that now we have social media and people are paying attention. Many people have always known about anti-immigration sentiment, racism, police brutality, etc.
I'd be interested to see if there's actually been a rise in numbers, but I doubt it.