February 23, 2016 5:15 pm San Francisco Students Walk Out of Class to Protest Racism About 20 high school students walked out of class in San Francisco Tuesday morning to protest alleged racism at their school. Mark Matthews reports. US & World Videos 2:07 New study links consuming red meat with dementia 2:05 Police find, return dozens of abandoned Amazon packages 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season