As Hong Kong pro-democracy advocates voiced support for Thai anti-government protests at the weekend, they used the hashtag #MilkTeaAlliance.

In Bangkok, flags representing Hong Kong and independence for Taiwan appeared on a sign bearing the tag at the biggest demonstrations in years.

And in Taipei, dozens of people gathered to back the Thai protests and give weight to a nascent community of cross-border youth movements pushing for democracy at home and uneasy with China’s growing regional power.