Charlie Kirk's suspected assassin shared messages detailing the aftermath of the killing via an online chatroom, authorities said. Tyler Robinson, 22, was arrested on Thursday after allegedly killing the 31-year-old conservative activist as he spoke at a university event in Utah. Authorities said he inscribed messages on bullets referring to internet culture and anti-fascist sentiments before firing the shot that killed Kirk on Wednesday. A roommate told officers that Robinson discussed the engravings and his movements after the killing on an online chat room, authorities said. It is thought he used the website Discord, which is also gaming platform. It...