Propagandamentary 

A TV programme (in the UK usually made by The BBC or Channel 4), that presents itself as a factual and impartial, educational piece, but in fact is an agenda driven piece of political propaganda created to convince the population that lies are the truth and that the truth is a lie; usually by creating a false flag threat that doesn't actually exist, that will keep the population looking in the wrong direction, or by glorifying faux revolutionary movements,that will keep the population chasing shadows.

I though It's was going to be interesting, but it was just a propagandamentary.

Propagandamentary by Rikstir July 18, 2019

procugandamentary 

n. A media work in the guise of a documentary which clearly supports a nation or political stance over others and serves as a propaganda tool.

My friend says that Wings on the Discovery channel is a procugandamentary for the US.

procugandamentary by Warren February 23, 2003