Any discussion about this topic that doesn't begin with sin, man's total depravity, and his need for a Savior is not one worth having.
Gun control won't put an end to sin. Psychiatrists won't do anything for man's total depravity. The government is not a savior.
Repent and put your faith and trust in Christ Jesus alone. Only a heart that has been transformed through the free gift of grace will make a difference.