Apparently the residents of Auchinleck in Ayrshire decided they'd had enough of gangs from "Yorkshire" (lol) selling drugs in their town so they rose up and kicked them out. In response, the state sent in the riot squad.

Given the heavy-handed response and the fact that the media seems to be silent as to the cause of the mysterious "far-right rioting", it seems safe to assume the gangs are not white.