LONDON: At a London sports field, Maya Hassan watches with pride as about 30 women, almost all Muslim and from ethnic minorities, join a self-defense course she organized in response to a wave of riots that violent and racist attacks have occurred. Muslims and migrants. The 28-year-old martial arts expert said she wanted to help black women learn how to deal with abuse and build bonds and trust after more than a week of unrest that targeted mosques, asylum seeker hotels and the police. .