They cannot kill 50 schoolchildren at a time screwdrivers, or assassinate a physician in a large crowd at church. It's a simple equation: fewer guns = greater public safety.
Only if you really get rid of illegal/unregistered guns. You might pass a law to take guns away from law abiding citizens. That would be a happy day for all the crooks out there with stolen/ illegal weapons, they will have total control if that happens.
Guns didn't kill 50 children. People who failed at helping Adam Lanza killed 50 children.