LAKELAND, Fla. — Marco Rubio lays much of the blame for the mass protest that shut down Donald Trump’s Chicago rally on Trump himself. But some of Rubio’s supporters see things differently. They see the protesters as bearing most or all of the guilt for the chaos in Chicago. And they point to the work of leftist organizing groups as the key factor in the affair.

“It was too organized,” said Cynthia Dugan, who came to Concord Coffee here in Lakeland to catch Rubio’s quick stop Saturday afternoon, just four days before the Florida primary. “I think it was organized by MoveOn.org and Black Lives Matter; it wasn’t just a spontaneous event.”