You do not extend tolerance to those who would deny your humanity. Want to know how to fight back against authoritarianism? Look to the folks who've been fighting against racism for (literally) hundreds of years. Racism in the US is just fascism that hasn't hit white people yet.
It's rooted in classism and in a special breed of expressively-aggressive individualism. Self-identification and self-expression is paramount. You are forced to identify as a member of many different groups and outwardly express your thoughts and opinions.