"The oldest and most infamous American White Supremacist Terrorist hate group is the KKK, founded in 1885." How many clones are there now?

I'd guess hundreds as a minimum and thousands as the possibles. More than 100,000? Could be. I do not know.

But it all began in ORGANIZED fashion by the KKK. Other groups OWE them very bigly for the inspiration, template, yardstick, examples costumes and execution over the years.

I don't know if any other country can touch the track record of America in that regard. Nor would they want to I expect.