Marshall, a former New York Giants defensive end, said on SiriusXM Radio that he was upset about Limbaugh's remarks because the league is trying to make the game safer.
Limbaugh has a history of criticizing safety measures at all levels of football. He recently called helmet sensors being used by some college football teams as "another sign of America's decline."
Marshall said Limbaugh and his listeners should be part of the solution.
-- Bill Bradley, contributing editor