WASHINGTON — A now-viral photo shows the chilling moment a black woman is stuck on a DC train surrounded by masked thugs from a white supremacist group as they descend on the nation’s capital July 4. Freelance photographer Cheney Orr captured the eerie 250th Independence Day moment that some observers argue is symbolic of the nation’s struggles to live up to its promises. The woman is seen glaring as the Patriot Front thugs surround her. REUTERS The woman hasn’t been identified, and it’s not clear if she interacted with the Patriot Front members during the ride. Hundreds of members of...