San Diego police, on top of a police vehicle, look over the approximately 1,000 people marching through the streets of downtown San Diego to protest the genetic engineering of food crops and other organisms on the opening day of the international biotech convention in San Diego, California. June 24, 2001. The budget for the San Diego police, sheriffs and California Highway Patrol for the convention was approx. $4,000,000. Photo by Nic Paget-Clarke.

Also see:

• Genetic engineering and its impacts on food, farming and the environment
• A photo of the march