It's not just about preventing the next mass murder. It's about preventing the next child death by bullet.
The gun debate comes down to two things convenience (gun owners not wanting to fill out more forms) and Profit (gun companies not wanting to make less).
Because if we put into place gun laws that would prevent deaths by bullet - gun owners would have to fill out more forms, spend more money and sometimes not be able to get as much ammo as they want. Boo-hoo.
If we put into place laws that prevent deaths by bullet -- guns and ammo manufactures will make less money because they will sell fewer funs and way fewer bullets.
Nobody wants YOUR guns. We just want you to be more responsible with it (them).
And before you go off half cocked about the 2nd Amendment-- remember this is how the conservative supreme court interprets it.
District of Columbia v Heller - Justice Scalia
Like most rights, the Second Amendment right is not unlimited. It is not a right to keep and carry any weapon whatsoever in any manner whatsoever and for whatever purpose: For example, concealed weapons prohibitions have been upheld under the Amendment or state analogues. The Court’s opinion should not be taken to cast doubt on longstanding prohibitions on the possession of firearms by felons and the mentally ill, or laws forbidding the carrying of firearms in sensitive places such as schools and government buildings, or laws imposing conditions and qualifications on the commercial sale of arms. Miller’s holding that the sorts of weapons protected are those “in common use at the time” finds support in the historical tradition of prohibiting the carrying of dangerous and unusual weapons.