No background checks for weapons purchases

No background checks for mental stability or criminal history for weapons purchases in America?

Want proof?  Need proof?

There's this, as just one example of why we need them and sorely (click on picture for easier viewing):



Here are more examples:

http://youtu.be/6Tv9BeOkRTc

http://youtu.be/spV8sGi4qxk

http://youtu.be/h3a7-s9hKC0

This needs to change, America. We need to change it.