I don't.
Someone on FreeRepublic said it best: The federal government has robbed the American people of a chance to show their generosity and charity.
It is NOT the government's job (federal, state, or local) to take money from its citizens and redistribute as it sees fit.
I am heartbroken over this tragedy and have contributed and will continue to contribute in ways that I can. However, it doesn't change the fact that the government should not be a money-redistribution machine.