With every horrific story of gun violence, we vow to amend gun laws so that they require universal background checks and ban assault weapons and high-capacity magazines. Then, as the news coverage fades, so does our attention.
As President Obama said at the Newtown vigil, "we're not doing enough, and we will have to change." By all means, let's do something. Programs like the Nurse Family Partnership and Cure Violence are two examples of strategies that get results. They are scientific proof of hope.