 Broadcasting from the Riverside Chevrolet Master Control Center, this is WACV Cusada, News Talk 93.1 FM. When it's Chevy, it's Riverside. With SRN News, I'm Jason Walker. It has been a bloody holiday weekend. Officials say shootings leaving at least 33 people dead, dozens more have been wounded. In Chicago, at least 11 people have been shot and killed, 55