"...a bill that would ban the sale of Grand Theft Auto and other violent video games."
"preventing some video games from being sold to minors."
are quite different things. The former is government censorship and generally a bad idea, the latter is a sensible option. Parents will still be able to buy the games for their kids and it should be their responsibility to check what they are playing. Regardless, the law is probably largely irrelevant as kids can get their hands on the games if they want to. An easier option is to put an age restriction option on the console itself.
That being said, the sentence "With carjackings on the rise in Chicago and elsewhere, a South Side Democratic state representative has introduced a bill that would ban the sale of Grand Theft Auto and other violent video games." is rather ridiculous as there is no correlation between these two things as far as I know. If anything I would assume having these games would lower the incidents of carjackings by minors.
Maybe the government should try to tackle poverty, poor family structures and lack of education before looking for scapegoats for their own failings.