Dozens of masked members of the white nationalist group Patriot Front marched through Washington, DC, on Saturday as crowds gathered in the US capital to celebrate the country’s 250th anniversary. Videos and photographs shared on social media showed participants marching in formation near Union Station and other parts of the city. They wore navy-blue shirts, khaki trousers, tan baseball caps, sunglasses and white face coverings, while carrying American flags, Confederate flags and banners.