SACRAMENTO, Calif. — Bobby Singh carefully read the details contained in the federal indictment made public this week alleging a plot by the Indian government to assassinate Sikh activists in the U.S. Then Singh, a Sacramento State student and local leader in the movement to create an independent Sikh state, came upon an especially chilling detail: One of the targets, an unnamed person, was in California. “Could this be me?” he wondered. Singh has good reason to consider that possibility. Like many Sikh activists in the Central Valley and Bay Area, Singh’s life has been a surreal mix of sadnes...