The three fingers supposedly represent w for white and the ok circle for the top of p for.
Australian white supremacist brenton tarrant was photographed using the “ok” symbol in the courtroom.
Touching the thumb and index finger to make a circle, with the remaining three fingers held outstretched, is a gesture that people around the world have made for.
Web4chan's /pol/ recently tried to convince the internet that the ok hand sign was a white supremacist icon.
This largely failed, however some of the extreme left.