That's an ass move... the guy was keeping the protesters away from the police.
The HK protesters are actually pretty awesome:
Things that could only happen in a Hong Kong protest
- Doing your homework
- Apologising for the barricade you put up
- Deploying ancient arts of self defence with an umbrella
- Concern for how fragrant fellow protesters are
- Keeping off the well cut grass lawn when asked by a cardboard sign
- Being the tidiest protesters on the block
For those who don't know what it's about--the protests are basically happening because China won't let Hong Kong choose election candidates for the coming election. Instead, HK voters will choose from a list of candidates pre-approved by China's communist party. Naturally, people are against this as it doesn't feel meaningful.
When the UK returned HK to China, the Chinese promised that HK would retain its human rights and that the Chinese government will not meddle in its internal affairs for 50 years--it'll only be in charge of international affairs and defence.
I hope China does the rational thing and lets them choose their candidates.