NPR's Juana Summers talks with Gov. Gavin Newsom, D-Calif., about the protests in his state and the federal government's decision to send in the National Guard.
President Lyndon B. Johnson federalized the National Guard in 1965, calling on troops to protect civil rights advocates who were marching from Selma, Ala., to Montgomery.
U.S. Northern Command says the infantry battalion would be supporting the National Guard troops "who are protecting federal personnel and federal property in the greater Los Angeles area."