Warning: this article contains graphic photos. JOS, Nigeria—Before a celebration of conflict reporting could even begin, the tragedy of conflict intruded. Unknown gunmen took the life of a man who has helped support journalists in Nigeria just hours before a press conference aimed at commemorating victims of a massacre and celebrating breakthroughs in coverage of Nigeria’s little-noticed war on Christians. Reuben Sunday, 28, was ferrying attendees on his motorcycle to the event when unknown terrorists sprayed him and his three passengers with automatic rifle fire. Killed along with Sunday were David Amos, 42, and his son Abednego Amos, 8. Twelve-year-old Emma Amos survived and is recovering in a hospital in Miango. “He was ambushed while transporting the other victims to the conference venue,” Lawrence Zongo said. “The victims were on their way to Nkiedoro village and Reuben offered them a free ride to Nkiedoro,” Zongo said. “He could have been …