The People's Republic of China is in ONI's pervasive category and is on RSF's internet enemy list. China blocks or filters Internet content relating to Tibetan independence, Taiwan independence, police brutality, the Tiananmen Square protests of 1989, freedom of speech, democracy, pornography, some international news sources (such as the VOA), certain religious movements (such as Falun Gong and the Roman Catholic Church), many blogging websites, and Wikipedia. Some 52 cyber dissidents are reportedly imprisoned in China for their online postings.