people with alleged ties to two rival street gangs engaged in a bloody years-long war in Riverside were arrested today in an operation aimed at taking down the gangs' leadership."Operation Promise," a coordinated federal, state and local law enforcement sweep, targeted the Eastside Riva and the 1200 Blocc Crips, leading to the arrests of 50 people, the seizure of 28 guns and two pet rattlesnakes, authorities said."This unprecedented operation is part of my ongoing promise to bring hope and restoration to the people of Riverside," said Riverside County District Attorney Rod Pacheco, who made the announcement during a news briefing at the Regency...