    Sentence 1: It was the biggest  protest since hundreds of thousands  marched in — outrage © over the  massacre of democracy. activists  occupying. Tiananmen Square.in  Beijing in 1989 .    Sentence 2: Hong Kong has not. seen  such a protest. since. hundreds of  thousands marched in. outrage over  the 1989 massacre--of democracy  activists occupying. Beijing 9's  Tiananmen Square .