Two versions of KKK. First is by Nathan Bedford Forrest (1865-1875), to fight the Yankee occupation/Reconstruction, organized similar to Freemasons. Died out with withdrawal of Yankee occupation and institution of Jim Crow. Second was 1920-1975 ... after Birth Of A Nation. Was caused by massive foreign immigration which was ended in 1920, because of anarchist/communist scare. Also offense against Black regiments of US in WW I. President Wilson brought segregation to Washington DC for the first time. Gun ownership restriction was pre-Civil War to keep free Blacks from being armed, had nothing to do with liberalism. At that same time, turn of century, there was a drug scare, that drugs were being used by Black men to seduce White women (see Bill Cosby). The original war on drugs was mounted for conspiracy theory racist reasons. War against MJ was based on Big Tobacco objecting to drop is profits during Depression. Follow the money!
My mother's father and his father were part of the 2nd KKK. They did participate in an accused Black criminal lynching in Kansas.
There are quite a few John Browns here who would rob, rape and murder every Southern White ... because ... just like the New England psychopaths of 1860. Leftists are closest to Puritan Christianity, minus Jesus.