These guys should have stayed home

Chinese paramilitary police in blue track suits have been guarding the Olympic flame during its tour around the world. But they are not just protecting the torch. They pounced on a French torchbearer who tried to wear a headband with a Tibetan flag, as well as an American torchbearer in San Francisco who pulled a small Tibetan flag from her shirt a she started her run.
These agents were selected from elite units of the People’s Armed Police–an organization that has been involved in the crackdowns in Tibet. They are the communist Chinese version of the Schutzstaffel. My question is, why are the free nations of the world allowing these agents onto their soil?