If gun control was effective, Chicago and New York wouldn't be shooting galleries, and Southeast D.C. would be Paradise.
Crime is created by bad people and bad behavior, the prevalence of which creates a market for weapons (usually of the stolen variety) because good people who behave lawfully don't use them to shoot and kill innocent people.
But Democrats don't give a damn about facts or logic or history because all they care about is creating chaos for the purpose of taking power.
They'll call everyone a "racist", but somehow still allow young black gangs to roam freely in neighborhoods they wouldn't themselves ever visit, because the path to power for Democrats is paved with misery and death.