You might have seen a suspicous demonstration on T.V., where people are fed up with occupying U.S. military forces, and attribute a parade to a billion people.
Would you want people around the world to judge U.S. Citizens based on a KKK rally?
If China attempted to rule over the U.S., would you march in the street? I would.
As long as they are not threatening our way of life, why threaten theirs?