Hate Group Members
The extremist hate group thing seems a little trumped up to me.
But their definition of hate seems broad. They label some Christian groups that don’t share their views on LGBT issues, like the Family Research Council, as hate groups. Then again, I suppose the Klan also considers itself a Christian group not big on the LGBT agenda.
Anyway, I found the FBI figure of 2,200 Klan members quoted in Newsweek archives. So I went with it.