How is it an example of "shining at its best" when the Soviets made far more sacrifices during WWII only to be robbed of the credit in pretty much all western popular accounts. Yes, they were more brutal to those they defeated in many instances, but that doesn't diminish their military contribution.
The US government doesn't engage in direct censorship like the Chinese government but it does have some power, in practice, to shape its portrayal in the media. The Pentagon pulled production assistance from The Hurt Locker because it didn't like certain aspects of how the military was portrayed[1], as is their right of course. Most films cannot afford this luxury. The relationship between the state and the press is also closer than many think, particularly when it comes to briefings from the intelligence community.
Social media companies like Twitter and Facebook admittedly do a pretty good job of allowing a wide range of views to be expressed, although this comes at the price of allowing massive amounts of disinformation as well.
>try to find something similar on PRC's pointless war in Vietnam which they lost.
How about this one? https://en.wikipedia.org/wiki/Youth_(2017_film)
[1] https://www.latimes.com/archives/la-xpm-2010-feb-25-la-et-hu...