Authorities are investigating whether Tyler Robinson, suspected of killing Charlie Kirk, believed Kirk's views on gender identity were "hateful" to people like Robinson's transgender roommate, six sources familiar with the case tell Axios. Why it matters: Investigators believe Robinson's anger at Kirk's views could be a key to establishing a motive for the slaying of the controversial activist whose death sent shockwaves through American politics. Each of the six sources familiar with the investigation told Axios that investigators believe Robinson had a romantic relationship with his roommate. Zoom in: Axios' sources said investigators initially wanted the information about the roommate's...