Yes....gun violence would then be replaced by other forms of violence...much worse in many ways and directed towards weaker and older people and women.NICS is not a license. Also with rights become responsibilities. How would a background check on any sale other than to family be that much different than the same background check every time you purchase from a FFL?
Will it solve all gun violence problems? No. The only way to solve that would be if every single gun and piece of gun manufacturing machinery vaporized at the exact same time.
Guns are the great equalizer.
As they said in the 1800's: God made people, but Col. Colt made them equal....