Calls to violent or hateful ideology (brown people are all bad because of their skin color, judge a class of people based solely on their born traits) leads to nasty outcomes. We learned that many times through history, notably in the mid 20th century.

The real question there is who is to blame, the person who days something hateful or the one who acts on it?

Don't forget that we also learned in the 20th century that millions can support and die for genocide while only a few dozen will be charged while the rest returned home. We also learned that the winner of said conflict can wipe out entire cities and go home the victor without consequence.

Believing that people's behavior is not based off born traits also will lead to nasty outcomes.