What Happened in Tiananmen Square? - Questions For Corbett

Did the US Marine Corps pull a dirty trick on Smedley Butler? Why did the Rockefellers donate so much land and money to the national parks service? And what really happened at Tiananmen Sqaure, anyway? This week on Questions For Corbett, James does a good ol'-fashioned questions round-up and fields a number of queries on a number of topics.