Gun Control ?

I have a simple question to ask Rep Rangel, Sen. Feinstein, Sen. Reid, President Obama, and any others engaged in circumventing the United States Constitution:

Were the Cambodians better off after Pol-Pot disarmed them?
Were the German people better off after being disarmed by the Nazi's?
Were the Russian people better off after being disarmed by the Soviet Union?
How about the Chinese people after being disarmed by Chairman Mao?

The only people that would be better off in the United States if it's citizen's were disarmed would be the criminals. There are enough laws on the books to effectively disarm the criminals without disarming or even limiting the rights of lawful citizens. So what is the real motive here?