Charlie Kirk's assassination highlights a history of political violence in the U.S.Published 4 hours ago This article appears to have no content available. You can try returning to the homepage to browse other articles. Read original articleRelated from feeds.nbcnews.com1 hour agoUniversities hosting Charlie Kirk expected crowds and protesters. At Utah Valley, a shooter arrived.3 hours agoCharlie Kirk's assassination tests Trump's ability to help a nation heal3 hours agoCopycat concerns after shooting death of Charlie Kirk3 hours agoTrump: ‘I’m really concerned for our country’3 hours agoTrump says he’ll attend Charlie Kirk’s funeral3 hours agoSafety fears grow in Congress after Charlie Kirk shooting