Before the law took effect June 30, protesters often held up colorful posters plastered with slogans that ranged from condemning the Chinese government to calling for Hong Kong’s independence.

BEIJING/SHANGHAI--Chinese protesters have turned to blank ... activists also raised blank sheets of white paper in protest to avoid slogans banned under the city’s new national security law ...

Vienna [Austria], March ... This protest was followed by a rally by around 200 Tibetan Diaspora members from the Chinese Embassy in Vienna to the Stephanplatz. The members raised slogans ...