lets look at places where guns have been banned, did it stop tragedies? no. it caused crazy people to just go to the next level
i.e. Oklahoma city, federal building, guns not allowed, so rather than walk in a shoot up the place timothy mcveigh leveled the place.
or airplanes, gun free? yes. did it stop terrorists? nope, they took down 2 of the tallest structures in the world, and seriously damaged the pentagon.....without guns
i think that we should not tighten restrictions on guns. even if to the point that we outlaw them, it will just be taken to the next level, the psychos out there will just bomb schools with home-made bombs instead like mcveigh
or hi-jack a school bus like al-qaida hijacked planes and use the entire thing as a weapon itself
(remember that school bus full of kids kidnapped and buried alive years ago?)