Opinion: Why not keep guns from criminals, terrorists, and mentally ill?
Why not? Because the 2nd amendement does not say "...the right of the people [except for crazies, criminals and terrorists] to keep and bear arms..."
Maniacs, druggies, gangbangers and terrorists are people too (unless they are refugees).
Just think of 36,000 American dead each year as the price of freedom and thank them for their sacrifice.
They are just collateral damage in the war on ...um....er....
In the war on some theoretical slippery slope, dang it!