Complex sentence: The school was founded in 1964 by Robert J. Morris, an attorney and former judge who had been best-known as an anti-Communist crusader who had served as chief counsel the United States Senate Subcommittee on Internal Security.
Split into simpler sentences: The school was founded in 1964 by Robert J. Morris, an attorney and former judge known as an anti-Communist. Morris had served as chief counsel the United States Senate Subcommittee on Internal Security.