When Victor Alcala saw that the Department of Government Efficiency, or DOGE, had the Department of Veterans Affairs in its crosshairs, he decided to set up a protest at his local Tesla dealership. On a rare rainy day in Los Angeles in mid-March, Alcala stood outside the Alhambra Tesla showroom holding a sign: “Don’t buy a Swastikar.” Alcala, a social worker, interacts with older adults in his daily job. More than 56 million seniors receive Social Security benefit payments each month. For a long time, Republicans and Democrats saw the program as the “third rail of politics,” untouchable because of...