From a CDC study that was ordered by the Obama Administration:
“Almost all national survey estimates indicate that defensive gun uses by victims are at least as common as offensive uses by criminals,” says the report, which was completed in June and ignored in the mainstream press.
The study, which was farmed out by the CDC to the Institute of Medicine and National Research Council, also revealed that while there were “about 300,000 violent crimes involving firearms in 2008,” the estimated number of defensive uses of guns ranges “from about 500,000 to more than 3 million per year.”
And as you all well know, you can’t argue with science. They wouldn’t want to be science deniers now, would they?
UPDATE: Here is the actual study.