I think it's pretty well established that high rates of gun ownership and proliferation of firearms produce mass shootings. Anyone who tries to argue otherwise has their head stuck in the sand.
> Gun Murder Rate is not correlated with firearm ownership rate in the United States, on a state by state basis. Firearm Homicide Rate is not correlated with guns per capita globally. It’s not correlated with guns per capita among peaceful countries, nor among violent countries, nor among European countries.