Create your straw-man "lefty" all you want, but the right I've observed in action wants exactly TWO freedoms: (1) The rich should be able to do anything they want to earn a buck, free from any regulation whatsoever. (2) People should have virtually unlimited access to any firearm they want.
As to your bogus claim about only "lefties" being against the freedom to sell violent video games, why don't you read the list of RED states who have filed friend-of-the-court briefs with the SCOTUS, supporting California's position:
Louisiana
Mississippi
Texas
Virginia
Oh, and let's not forget that bastion of liberal thinking,
http://www.eagleforum.org/
A brief excerpt from their Amicus brief:
http://www.eagleforum.org/briefs/video-game-case-08-1448b.pdf
Oh, and you might be interested to know that THIS progressive is personally opposed to banning the sale of violent video games to the under-18 crowd. I'm also opposed to banning the sale of video games containing explicit sexual content to the under-18 crowd.
Now, why don't you tell us again how progressives have the market cornered on nanny-state attitudes?