Can you demonstrate just one time, one place, throughout all of human history, where restricting the access of handheld weapons to the average person made them safer?
Before Stalin rounded up people and sent them to the gulags, the population had to be disarmed.
Before Hitler rounded up whatever group he wanted, the population had to be disarmed.
In fact, before any act of genocide on this earth, the people in control all did the same thing:
They refused the people of their country the right to bear arms.
I'd say that this question needs to be asked a bit more often.