That's a rhetorical question: of course they don't.
When the federal assault weapons ban ended on Sept. 13, 2004, gun crimes and police killings were predicted to surge. Instead, they have declined.
For a decade, the ban was a cornerstone of the gun control movement. Sarah Brady, one of the nation's leading gun control advocates, warned that "our streets are going to be filled with AK-47s and Uzis." Life without the ban would mean rampant murder and bloodshed.
Well, more than nine months have passed and the first crime numbers are in. Last week, the FBI announced that the number of murders nationwide fell by 3.6% last year, the first drop since 1999. The trend was consistent; murders kept on declining after the assault weapons ban ended.
Even more interesting, the seven states that have their own assault weapons bans saw a smaller drop in murders than the 43 states without such laws, suggesting that doing away with the ban actually reduced crime. (States with bans averaged a 2.4% decline in murders; in three states with bans, the number of murders rose. States without bans saw murders fall by more than 4%.)
...violent crime also declined last year, according to the FBI, and the complete statistics carry another surprise for gun control advocates. Guns are used in murder and robbery more frequently then in rapes and aggravated assaults, but after the assault weapons ban ended, the number of murders and robberies fell more than the number of rapes and aggravated assaults.
It's instructive to remember just how passionately the media hyped the dangers of "sunsetting" the ban. Associated Press headlines warned "Gun shops and police officers brace for end of assault weapons ban." It was even part of the presidential campaign: "Kerry blasts lapse of assault weapons ban." An Internet search turned up more than 560 news stories in the first two weeks of September that expressed fear about ending the ban...
...The fact that the end of the assault weapons ban didn't create a crime wave should not have surprised anyone. After all, there is not a single published academic study showing that these bans have reduced any type of violent crime...
Research funded by the Justice Department under the Clinton administration concluded only that the effect of the assault weapons ban on gun violence "has been uncertain"... Gun controllers' fears that the end of the assault weapons ban would mean the sky would fall were simply not true. How much longer can the media take such hysteria seriously when it is so at odds with the facts?
How much longer? As long as it takes to eviscerate the Second Amendment.
Which is why you haven't heard about any of this in the antique media. Or the hypocritical, would-be potentates in the Democrat Party?