If they are check out this NY Times article, you may go to jail or get a fine. Here are my brief thoughts on the issue:
1. unless you are somehow compensated financially to wear your jeans below your waist, it’s probably not a good idea.
2. Fred already discussed du-rags; they are not fashion; they are not “ybp.” In my opinion, neither are sagging jeans.
3. Even if it is an expression of the community you live in or come from, ponder if it does anything to actually BUILD that community or the image of it? 
4. True, it may be self-expression and probably should not be criminalized (I mean, there are some daisy dukes, halters and hot pants that are MUCH more indecent), but on some level there is something unseemly about it. Or maybe insensitive. I generally am not interested in seeing random people’s boxers.
5. Yes, there is also a profiling issue related to this, too. But, does that change whether it is a good idea to draw attention to yourself in this manner?
6. Creativity and Individuality: good
7. Projecting or reinforcing negative images: not so good.
8. Expecting to be treated like an M.B.A when you are dressed, at best, for a slumber party: not the wisest expectation.
9. Being aware of the image you are projecting: good.
10. Waiting for the penalty of law to rise above typical behaviors: not so good.
I recognize the argument that button-down shirts, flat-front pants and other tailored looks might play into notions of selling out, yuppie lifestyle or denying your roots. But, so long as suits, cuffs and polished shoes provide me JOBS that pay me MONEY that I might use for CHARITY and free me on WEEKENDS to volunteer in MY COMMUNITY, you are going to be hard-pressed to make me feel bad about that.
Plain and simple: Don’t be common!
Dash
While I don’t sag my pants anymore(I’m coming up on 28) I definitely USED to when I was a young thundercat. My parents rode me incessantly about pulling up my pants because they didn’t understand. I think that’s the key to all of this Understanding. Not all cats that sag and rock doo rags are thugs, and not all cats that wear dockers and wing tips are professionals. Plus the more we focus on and chide our young people for sagging, the more they are likely to do so. At this point I just shake my head when I see it, but I don’t knock it. While it’s not my favorite fad or trend, who am I to say it can’t be done?
August 31, 2007 at 1:32 pm
d
This is a racist policy, meant to penalize Black people. Once upon a time Jazz was considering evil. When was the last time a predominantly Caucasian form of self expression was criminalized?
August 31, 2007 at 4:11 pm
Lisa
As the Principal of an inner-city high school, I certainly agree that teenagers are contrary; they thrive on doing the opposite of what adults would have them to do. I think it is our job to teach OUR kids how to ‘code switch’. They MUST learn that the way you wear your clothes when you are out with friends, is one way, but that corporate America and certain other settings will require you to wear your clothes in another way (without the sag). Your very success will depend on their ability to ‘code switch’.
September 1, 2007 at 3:56 pm
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December 19, 2007 at 11:59 pm
urban fashion
Oh! yes my pants sags whenever I loose weight, but it seems it will be okay because it is the new trend in our society.
April 13, 2009 at 5:15 pm