Their successful track record with major demonstrations, including the April 2000 large-scale protests against the World Bank and International Monetary Fund, has brought them or their aides invitations to share their crowd-control tactics with numerous other police forces across the country and around the world.

— washingtonpost.com
mmmmmHM.
Their success in dealing with the 2000 protests. Would that be their famous ‘handling’ that got them sued by every major civil rights organization in the country? For little things like locking people up on buses, not allowing them to take their medication? Or maybe how they told those people that if they paid $50 and signed a form letter declaring their guilt (yup, that almost sounds like due process), they could go?