sentences:  During the 1992 Los Angeles riots, 200 marshals of the tactical unit Special Operations Group were dispatched to assist local and state authorities in restoring peace and order throughout Los Angeles County, California.Marshals have protected American athletes at Olympic Games, the refugee boy Elián González before his return to Cuba in 2000, and abortion clinics as required by federal law.In 2003, Marshals retrieved North Carolina's copy of the Bill of Rights.