Original sentence: Hong Kong and Macau are the only places on Chinese soil where the 1989 crushing of China's pro-democracy movement can be commemorated, and the annual event to commemorate has been taking place in Hong Kong since 1990
Edited sentence: Hong Kong and Macau are the only places on Chinese soil where the brutal 1989 crushing of China's pro-democracy movement can be commemorated, and the annual event to commemorate has been taking place in Hong Kong since 1990