Guns are inanimate objects. Not the violent things rabid antis like Chucky Schumer would have you believe. ("...these violent assault weapons..."-- Sen. C. Schumer)
As to the Kleck data... There is a recent report by Clayton Cramer & David Burnett published by the Cato Institute[0] that backs up Kleck. The authors also conclude that more than 2 million crimes are thwarted each year by armed citizens.
Of course those who seek to deprive us of our rights will blissfully ignore hard data like that presented by Kleck, Cato and even the government's own crime statistics as it is contrary to their agenda.