On America’s 250th anniversary, a large group of men in khaki caps and white face masks, their navy button-down shirts tucked into khaki pants, were struggling to navigate the turnstiles of D.C.’s public-transit system. “Just give it a minute and try again!” yelled their leader, Thomas Rousseau. At another point, he shouted, “Get another card!” Dozens of members of Patriot Front stood in front of him and stared at the polycarbonate gates of the Metro system. A Metro staff member offered advice.