The San Francisco General Hospital community came together to hold a vigil for a coworker killed on the job. Alberto Rangel, 51, died Saturday after he was allegedly stabbed by a patient on Thursday afternoon, leaving his friends and colleagues mourning and calling for safety improvements. "We are furious as a community," Rangel’s coworker Maddy Abule told CBS Bay Area. "This is unforgivable. And a lot of us don't want to come back. A lot of us can't come back." | KPIX CBS San Francisco Bay Area