Just to add some objectivity to this debate...
Everyone should read this. It is from a reputable, peer-reviewed source and is very well written.
Just to add some idea of what this is about
Results: In the 18 years before the gun law reforms, there were 13 mass shootings in Australia, and none in the 10.5 years afterwards. Declines in firearm-related deaths before the law reforms accelerated after the reforms for total firearm deaths (p = 0.04), firearm suicides (p = 0.007) and firearm homicides (p = 0.15), but not for the smallest category of unintentional firearm deaths, which increased. No evidence of substitution effect for suicides or homicides was observed. The rates per 100 000 of total firearm deaths, firearm homicides and firearm suicides all at least doubled their existing rates of decline after the revised gun laws.
Conclusions: Australia’s 1996 gun law reforms were followed by more than a decade free of fatal mass shootings, and accelerated declines in firearm deaths, particularly suicides. Total homicide rates followed the same pattern. Removing large numbers of rapid-firing firearms from civilians may be an effective way of reducing mass shootings, firearm homicides and firearm suicides.
A radical gun law reform occurred in Australia after a gun massacre (35 dead and 18 seriously injured) in April 1996. Semi-automatic and pump-action shotguns and rifles were banned; a tax-funded firearm buyback and amnesties saw over 700 000 guns surrendered from an adult population of about 12 million.
The total firearm deaths, firearm homicides and firearm suicides had been falling in the 18 years preceding the new gun laws. In all, 13 mass shootings were noticed in the 18 years preceding the new gun laws.
In the 10.5 years after the gun law reforms, there have been no mass shootings, but accelerated declines in annual total gun deaths and firearm suicides and a non-significant accelerated decline in firearm homicides. No substitution effects occurred for suicides or homicides.
Says it all for me. Naturally, the pro-gun crowd will choose to deny it has any scientific validity. So be it.