Apparently it was removed because it included in-app purchases and there's a rule against profiting off of tragedies:

https://www.reuters.com/article/us-hongkong-protests-google/...

> A Google spokesman said that “The Revolution Of Our Times” app, which lets users role-play as Hong Kong protesters, violated a long-standing policy “prohibiting developers from capitalizing on sensitive events, such as attempting to make money from serious ongoing conflicts or tragedies through a game”.

I guess if they remove the IAPs it would be okay?