Hip-hop is hardly the sum of the images you see on video shows or the sounds you hear on commercial radio stations. The truth is: at its most elemental, hip-hop remains a lived, local culture. It's not just a CD or DVD being hawked by well-dressed folks posing in a magazine. It's a culture practiced — and evolved — daily by millions of young people all around the world.

So it makes perfect sense that the young woman or man who goes to the poetry slam, the b-boy/b-girl competition, the turntablist exhibition, or is just hanging in the park playing the latest jams on the weekend, would on Monday be angry with the way their school has been turned into a series of security checkpoints, the way the plant next to their house is spewing toxic fumes, or the fact they have no place to gather in their city without harassment from authorities. Hip-hop provides a way for young people to express not only joy and a love of life, but pain and a desire for change...