[verall]

There's a big gap between "national firewalls shouldn't exist" and "country should invade/"liberate" another country to prevent national firewall (or insert other disliked policy)".

So to respond directly:

> Why should anybody trust them with another country?

They should not and should not need to trust them with another country

> would it be okay for china to liberate the USA

no, it wouldn't. But if China felt that the USA gov't was like, not cool, they could impose sanctions or not trade with USA.