In a federal crackdown on the Latin Kings, a notorious street gang in Milwaukee, federal authorities had a chance to arrest a key gang leader wanted in connection with a homicide when he appeared at the county courthouse on a different case. But an investigation by Milwaukee Journal Sentinel reporter John Diedrich revealed a startling lack of communication that let the gang leader go free. Indeed, the federal prosecutors did not know of the missed opportunity until Diedrich told them about it. Other mistakes allowed him to evade capture a second time. Authorities believe he is in Mexico.