I wonder if anyone has ever studied Third World propaganda campaigns over time to demonstrate an 'evolution' which recapitulates Western evolution in propaganda?

(I mention this because I saw recently the old example of Liberia's Charles Taylor who was elected when he 'campaigned on the slogan "He killed my ma, he killed my pa, but I will vote for him."'. Of course, his landslide was probably due to "the belief that he would resume the war if he lost." which is why one would want multiple countries. Do they all show this sort of phenomenon where laughably crude propaganda and campaigning works initially and is slowly replaced by subtler psy-ops, or is there no evolution because crude propaganda works best on those of low IQ, say?)