One of the protestors is holding a flagpole on which flies a black flag. Mo used black flags during warfare. When he made his triumphant entry into Mecca, his soldiers carried black flags, on which was written the arabic word, “Revenge”.
I heard a story about a Muslim yout who told a kuffar,”when the black flags come,…I forget the rest. Beheadings, pillage, or somesuch, I imagine.