A 1970s movie possibly, English production, about a controversial public figure being protected around the clock by government VIP guards.
I thought maybe it was Laurence Olivier as the public figure, but I don't think so.
One of the most memorable and disturbing scenes I recall was when the government VIP guard didn't hesitate to jump on an enemy grenade to protect the VIP and the rest of the panicked crowd, and seconds later blood splattered around the guard's belly.