I can see two sides to this.
Side A, I hate the idea of legislating style. Like Joe said, it’s a slippery slope.
Side B, ghetto culture and ghetto parents refuse to step up and PARENT, so it may come to the government having to step in. I’d love to see statistics showing how many people who walk around with that much of their underwear showing graduate high school, have a clean criminal record, and are just generally productive members of society.
Personally, I’d rather see them legislate ghetto culture somewhere more visible. Maybe start holding parents criminally responsible for their child’s action until they’re 18. Your 16 year old gets caught with an illegal weapon, or selling drugs, and not only do they go to jail but so do you. You might see a lot more parents get involved with their kids education then, and the ghetto mentality of education being lame would disappear. Once that happens, no one would want to dress like that.