Gun control legislation is a scapegoat for the moral decay of the nation. Fatherless homes, substance abuse, lack of community, polite society and common decency are the cause of these issues. Taking a gun away from someone who had too many parking tickets is not going to stop premeditated murder and may cause a victim of domestic assault to be unable to protect herself.
The problem with gun statistics is they never show how many murders, assaults, robberies, etc were stopped by guns. This data is not compiled. Removing rights always has unexpected consequences. Have a look at UK knife crime.