> Even now, the power the biohazard symbol once had to inspire awe and fear has begun to diminish. Today, it appears on everyday clothing and products, slowly becoming more ordinary than extraordinary.

This always annoys me, though it's a form of linguistic change. The worst example of this, IMHO, is the stickers and accessories you can get for guns to make them look like children's toys (e.g. red cap on the end) -- specifically subverting something designed to make children safe. I do think people who do this have a first amendment legal right to do so, but just because you're allowed to do something doesn't mean it's a good idea (there's no law to prevent me from drinking bleach if I want to, but that doesn't make it a good idea).