Here is the PLA training a women's militia, so they can go shoot to death the landlords and theocrats who have enslaved them for a thousand years (look at that smile!)

Here is the CIA's opinion on the matter (note, China was still controlled by the nationalists so that's what 'pro-China' means, the Mongolian People's Republic were the closest communists)

I'll just

leave these here

Tibet has High Speed Rail, do you?