For DC the ban on handguns is a safety issue
"We're going to fight to uphold a law that . . . has public support," Mayor Adrian M. Fenty (D) said at a news conference outside D.C. police headquarters. "The only possible outcome of more handguns in the home is more violence. Our appeal will help the District of Columbia be able to continue to reduce gun violence." . . . .
Other than referencing their opinion, what evidence do DC politicians have that murder or violent crime fell after the ban was instituted?