Regarding social media, the right dominates it. Not just posts by propaganda trolls but real live US humans.
GOP-friendly voices far outweigh liberals in driving conversations on hot topics leading up to the election, a POLITICO analysis shows.
www.politico.com
Propaganda mostly influences people who are already leaning toward the direction it is pushing. I say this not only from studies based on the effects of propaganda but from my personal experience. I have a brother who is very right wing in his views. Looking back, we were diverging in how we responded toward authoritarian messaging when we were teenagers. How was it with your family? Were they liberals before turning or were they already pretty conservative?
The flood of right wing propaganda did not unite this country, it divided us according to how we responded to its messages. Less than half the people in this country voted for Trump. If propaganda were as effective as you say, wouldn't they have gotten more votes?