Hours after Donald Trump canceled a Friday night rally in Chicago, citing safety concerns as hundreds of vocal protestors filled the crowd, he appeared before a crowd in Dayton, Ohio, to condemn the "planned attack" in Illinois, Reuters reports – even as a man at the Dayton event allegedly moved toward the stage, sending Secret Service agents to surround Trump. Video from the rally captured the moment agents suddenly appeared next to Trump when a man "attempted to breach the secure buffer and was removed rapidly and professionally," a campaign spokeswoman told NBC News. Identified as Thomas Dimassimo, he was...