Dr. Lourdes Ashley Hunter was still reeling from President Trump’s announcement banning military service by transgender people when she received an email asking if she would help organize a protest against the policy. For Hunter, who identifies as transgender, the ban felt personal, so she was happy to help set up a protest in Washington, D.C. The local organizer offered to connect Hunter, executive director of the Trans Women of Color Collective, with a woman named Mary Smith from the activist group “ReSister.” For the next two days, Mary Smith worked with Hunter on Facebook Messenger to organize the protest....