A 31-year-old Pilsen man who set fire to a police car on North State Street is the fifth person to face federal charges following violence and vandalism in the city this past weekend, the U.S. Attorney’s Office in Chicago announced Tuesday.Timothy O’Donnell is charged with arson after a witness filmed him wearing a clown mask while placing a lit object in the squad car’s gas tank during protests Saturday, the indictment states.  On Tuesday, the U.S. Attorney also charged Brandon Pegues, Amber L …