Today, everybody is a rebel. Of course, we're talking about socially acceptable rebellion, which of course includes buying the right consumables, wearing the correct rebellious clothes, and spouting the correct rebellious phrases. Rebellion is cool, so long as it doesn't go too far. Unfortunately, thanks to the omnipresent efforts of the television news, it's hard to find anything that shocks the general public any more. Fifty years ago, joining an obscure religion was enough to get disowned by the family, especially if the religion wasn't involved with Christianity, but the thrill of joining the Church of Satan or the Church of the SubGenius generally fades at about the age of 17.
Nothing works quite so well to screw with society than to be courteous.
Try this as an example. With the current employment climate, the only people willing to work retail sales positions don't expect courtesy and they generally get none. They can't help but move a little faster or refrain from spitting in your meal, because they have no excuse. Play it just right, and smoke starts pouring out their ears. Here's one I learned from living in Portland, Oregon, a town full of some of the rudest and most inconsiderate people on the planet.