This isn't an issue of market forces at work, it's an issue of trademark infrigement. You can't reliably separate that from the problem without changing it significantly. If the trademark issue weren't there (somehow, for the sake of argument) would the store owner still be selling the shirts? Well, the article quotes him as saying they were his best selling products, so I'd have to say yeah, he would be. Go take a look at
www.tshirthell.com (note, not work safe) This site has been around for several years at least.
There's obviously an ample market of people mature enough to have a chuckle at the humorous juxtaposition of children's TV characters and automatic weapons without running out and joining a gang themselves. As long as they don't infringe on someone's trademarked property, and nobody comes along to create a media campaign blaming them for society's problems, they can do just fine in the marketplace.
Samira, you'll note that nowhere in any of my posts did I say it wasn't within the school's or the parent's rights to stop the kids from wearing the shirts. The issue was with the segment I quoted in my original response, saying "This is why kids can't concentrate in school. This is why the incarceration budget is higher than the education budget." From the context I assumed "this" referred to violent media in general, and these t-shirts in particular. I'm saying it's not accurate to lay these problems at the feet of the media. I came to this conclusion in the following way.
First I'm operating off a couple of assumptions. Maybe they're wrong. Feel free to point out where, if so.
Assumption 1.
The violent crime rate and rate of participation in criminal gangs is significantly higher among poor, urban youth than among middle to upper class suburban youth.
Assumption 2.
Both groups are, on average, exposed to more or less the same media. (violent or otherwise)
Now, if both these things are true then we can conclude that violent media is not directly a cause of criminal behavior. If so, we could expect the crime rates to be the same among both groups since they are exposed to the same media. Obviously though, there are some additional factors in the poor urban group not present in the middle class suburban group that must contribute to their higher crime rate. The media is constant across both groups, so this doesn't explain the disparity in crime rates.
This contradicts what the woman in the article said, that "This [violent media] is why our incarceration budget is higher than our education budget" If we took the media out of the picture, I'm pretty sure that kids who grow up in poor, crime-ridden neighborhoods would still be more likely to commit crimes than kids who grow up in affluent, safe neighborhoods.