Just ask the folks in Massachusetts.
In 1998, Massachusetts overhauled their gun laws. Gun purchase and ownership was restricted significantly by the changes.
Since 1998, murders using firearms have risen 87.7 percent; aggravated assaults, 26.7 percent; and robberies using firearms, 20.7 percent. In contrast, during that same time frame the population of Massachusettes rose only approximately 7.0 percent – from 6.175 million in 1998 to 6.607 million in 2011.
Yep – stricter gun control laws work really well to reduce crime, don’t they?