@cbcnews: Second Sons, Canada’s predominant white supremacist group, held a large meeting in July where masked members participated in military-style drills. CBC’s visual investigations team and CBC Calgary uncover the location of the meeting and speak to residents of the small Alberta hamlet of Millarville, shedding light on a recurring strategy for white supremacist groups: booking unsuspecting community centres. #canada #cdnpoli #alberta #investigation #cbc