We need to worry more about the authorities in the USA than in China, it seems.
Secret Service confiscates books & button from Ron Paul delegates | Daily Newscaster: "Today at the Republican National Convention, as the Ron Paul Delegates were taking a picture in front of the model White House inside the Convention Center, they were surrounded by Secret Service which proceeded to search the bags of all the delegates. They took any and everything related to Ron Paul including signs, buttons, videos, slim jims, cards, even books.
Alternate Delegate Dennis Rothacker from Florida said “We were done taking the picture when Secret Service started walking into the room and surrounded us. There were about 30 of them. When they searched my bags they took my Ron Paul sign and turned a deaf ear to my complains, they just walked away.