The case of the execution-style Black-on-White murder on a Hollywood street this past Fourth of July weekend took a bizarre turn Friday night with the arrest of the suspect who is now being held on $1 million bail. Ezeoma Obioha, the 31-year-old man arrested by Los Angeles police for the murder Carrie Jean Melvin, also 31, was known to police—as a civilian member of the Los Angeles Police Department’s Wilshire Area Community-Police Advisory Board with the title of Secretary. Obioha was a rapper and entrepreneur who presented himself as being “all about protecting the community” and helping stop young minorities...