Matson Browning began infiltrating and exposing white supremacists in the mid-1990s, first with the Mesa Police Department, where he worked for two decades — much of it undercover, as well
Former Mesa officer recalls working undercover to take down white supremacists abc15.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from abc15.com Daily Mail and Mail on Sunday newspapers.