Agreed. I would point to widespread systemic racism as an evidence of this festering. And this was despite Ulysses S Grant’s, as President and controlling both Houses of Congress at the time, attempted harsh persecution of the KKK during Reconstruction. There’s just only so much you can do against what is essentially a domestic guerilla campaign. They hide. Really well. They come out and do things when you’re not watching, and flee when faced with real danger.