This is telling.
"Even with relatively small numbers, groups like the North Carolinabased Loyal White Knights (LWK), perhaps the most active Klan group in the United States today, have a fairly expansive geographical reach. In 2015, with just 150-200 members, they were able to draw attention to themselves in 15 different states (mostly in the south and east), typically through fliering, which requires only a single participant."
Even the ADL, considers it a "win" for the Klan, that they managed to PUT UP FLIERS, in multiple states, even though that just requires ONE member, to have the commitment to drive around for a couple of hours/days.
That's not a political force that got a President elected.
Hell, that's not even a force like rightwinger suggested, an Al Queda equivalent. These people are considered having a good day when they can get someone to drive a state over and post some fliers!