I think there less than a dozen people. I even knew one of them. He was a coworker and an okay guy.
I witnessed the same thing in Birmingham in the late '80s. Ten or twelve marching along a four lane highway. And some time in the '90s the KKK held a statewide convention in Birmingham that had just over fifty attendees.
The KKK barely exists these days except for assorted race baiters in the media and elsewhere.
Most of ‘em are probably in the pay of the FBI, who keeps the KKK alive just to have a racist bogeyman to point to.