The Tibet question
Tibet is currently a region in China or an occupied territory depending on who you are asking. If you ask a Chinese person who is loyal to their government they will consider Tibet a part of their nation. If you are asking someone from Tibet or a western country, they might disagree.
Over the years, many celebrities from the United States of America and other countries outside of China had shown support for Tibet. Part of China since the 1950s, the nation has gone through a lot ever since. But if you are an actor and have done a movie that has anything to do with supporting Tibet, you could face a ban from entering China.