LONDON (Reuters) - Thousands took to the streets across Europe and Australia on Saturday, as did hundreds in Tokyo and Seoul, in support of days of U.S. protests against police brutality. The rolling, global protests reflect rising anger over police treatment of ethnic minorities, sparked by the May 25 killing of George Floyd in Minneapolis after a police officer detaining him knelt on his neck for nearly nine minutes as fellow officers stood by. Europe has seen an unprecedented wave of anti-racism rallies drawing tens of thousands onto the streets.