Federal agents busted a Los Angeles “Peace Ambassador” known as “Diablo” for packing illegal military-grade body armor at crime-ridden Mac Arthur Park – after city paid the convicted killer $58,000. Michael Angel Alvarez, 41, a.k.a. “Diablo,” is an active 18th Street gang member and convicted murderer who is being paid with L.A. city taxpayer dollars for a bogus job as a Los Angeles “Peace Ambassador,” according to federal prosecutors. Agents with the Federal Bureau of Investigation arrested