I am thinking why does China ban Google, Facebook, Twitter and Youtube ? What are they afraid of ? https://en.wikipedia.org/wiki/List_of_websites_blocked_in_mai

I am thinking why does China ban Google, Facebook, Twitter and Youtube ? What are they afraid of ? https://en.wikipedia.org/wiki/List_of_websites_blocked_in_mainland_China https://en.wikipedia.org/wiki/List_of_websites_blocked_in_ma...