MIAMI — A widely circulated video that allegedly shows agents from Customs and Border Patrol detaining a woman on a Greyhound bus, after demanding from people on board proof of citizenship, has sparked indignation by many. The bus stopped at a station in Fort Lauderdale, Fla., during its route from Orlando to Miami on Friday afternoon. The driver announced there would be a "routine" security checkpoint and that is when two uniformed agents boarded the bus and announced they were from Border Patrol, according to Florida Immigrant Coalition, a Miami-based advocacy group.