Another video (6 minutes) you might be interested in by Vox is "China's trillion dollar plan to dominate global trade" [1], which is on China Belt and Road Initiative (BRI).
[0]: https://www.youtube.com/watch?v=MQyxG4vTyZ8
[1]: https://www.youtube.com/watch?v=EvXROXiIpvQ
Edit: One great passage from the first video [0] at 11:29 says:
"The [umbrella movement] protest didn't change the government's mind and it didn't immediately change anything in Hong Kong.
But this spectacle of young people rising up to defend their rights from the central government of China did spark a political awakening among the many in the city who had never before paid attention.
'I think post-umbrella movement was the first time that the middle class came out and voted in droves, and voted for the opposition force.' - HK Resident"