There is not and never has been statistical evidence that violent crime went down when guns were restricted – quite the opposite in fact, as Joe Huffman could point out and has done, ad tedium.
For a start, you don’t eliminate guns that way – you drive them underground and the criminals have the best choice first. You then leave the population at the mercy of the crims, especially with this ludicrous “you are the crim if you defend your home and family” abomination.
You also place yourselves at the mercy of the police who were once your friend but are now a control mechanism for the totalitarian push currently going on in society.
So the answer is to free up gun control, in order to cut back on violent crime.