I'm of the opinion that if we suppress it, it doesn't go away. When it comes back, it's much harder to control. I also firmly believe that everyone has biases and inclinations that are morally wrong. The sooner we learn how to deal with the "good guys" unfair biases, the sooner we can figure out how to deal with the "bad guys" too.
The available evidence says the opposite is true.
http://comp.social.gatech.edu/papers/cscw18-chand-hate.pdf
The way to deal with the "bad guys" is for private businesses to not give them a platform to spew their hate from. And it's up to us to pressure these private businesses to do that.