Between 1889 and 1930 there were around 3,700 known lynchings in the US. The perpetrators ranged from single people to small mobs to huge crowds of 15,000. The reasons given were broad. While most were accused of murder of rape, many were lynched for simply being rude, for arguing, for taking the wrong job or having the wrong beliefs.
I stumbled onto this and thought I'd give it a watch, the first 3 minutes had my blood boiling, hearing this history is a refresher to let you understand the people who identify as white supremacists are nothing but psychopaths, nothing more nothing less, they are sick sick people. I highly recommend you take the time to watch this.