The KKK reemerged again and grew to millions of members in the 20s for a variety fo reasons.
They first gained a foothold in the depression after World War I before the roaring 20s. By stoking the xenophobia and conservative moralism of white Protestants in cities around the country (not just the South), the KKK was able to recruit members who feared immigrants and a loss of their "way of life."
One method,if my understanding is correct, is to attack by surpirse or to kill as many people as possible.
By doing that, the killing of numerous/millions of people, usually end on on planes, buildings... That type of stuff.
They usually do bombing of large areas.
~Hope this helped :)
Trick question they were both foolish and noble