But even reporters long accustomed to the toxic fervor of Trump rallies were startled — and even frightened — at the vitriol of a Cincinnati crowd on Thursday evening as more than 15,000 supporters flashed homemade signs, flipped middle fingers and lashed out in tirades often laced with profanity as journalists made their way to a crammed, fenced-in island in the center of the floor.

The Trump supporters crowded by the metal barriers protecting the area, leaning over to get in one last insult before returning their attention to the stage as Rudolph W. Giuliani strode out…

On Thursday evening, there were noticeably more Secret Service agents monitoring the news media’s pen, though the agency declined to comment about the protection. Both CNN and NBC News have their own security at Trump rallies to protect their reporters and cameramen.