1911 - Turkey bans civilian ownership of firearms. From 1911 to 1917, 1.5 million Armenians, unable to defend themselves, were murdered.
1928 - Germany bans firearms. From 1939 to 1945, 13 million Jews, gypsies, homosexuals, the mentally ill & others, unable to defend themselves, were rounded up and exterminated.
1929 - The Soviet Union bans firearms. From 1929 to 1953, approximately 20 million dissidents, unable to defend themselves, were systematically eliminated.
1935 - China bans firearms. From 1948 to 1952, 20 million political dissidents were unable to defend themselves and were killed.
1956 - Cambodia bans firearms. From 1975 to 1977, one million "educated" people unable to defend themselves, were murdered.
1964 - Guatemala bans firearms. From 1964 to 1981, 100,000 Mayan Indians, unable to defend themselves, were rounded up and killed.
1970 - Uganda bans firearms. From 1971 to 1979, 300,000 Christians, unable to defend themselves, were exterminated. In one infamous incident, the habitants of a small village took refuge in a church, where every man, woman and child was massacred with guns and machetes as they were unable to physically defend themselves.
1995 - 6,000 Bosnian Muslims were massacred at Srebrenica in the ironically named "UN safe area" after having been disarmed first (a process aided by the UN).
Food for thought.