It was expressed in all sorts of activities, both legal and extralegal. The KKK was the most well-known organization embracing this goal, but they were not the only ones. I use the past tense, because it is the history that we are talking about. The question of whether white supremacy is active today is a separate matter that I will not get into because teaching history is about what was. So that is all I am focusing on. There is no doubt that what I described here played a big part in the formation of American society, with repercussions in the present day distribution of wealth. So even if there is no longer any white supremacy, its effect remains until today, whereas the importance of Paul Revere's ride to Lexington that all school children learn about is arguably inconsequential to the state of American society today. It is very likely that American still would have won the revolutionary war even if Paul Revere had fallen off his horse and never made it to Lexington.