Human nature is that of a predator. Powerful get advantage of the weak, and always has been.
Take for example the USA, it was created by the "expansion" to the West, "expansion" meaning taking ownership of the land others inhabited, and killing them. That needed a propaganda machine to justify it, Manifest destiny.
There were two parties, one won, the other lost. We are not mentioning slavery.
When the US could take advantage of the remains of the Spanish Empire, they did, there was a man called Pulitzer that became rich and famous inventing lies like "remember the Maine"(probably a false flag attack) in order to take control of their colonies and colonize it themselves.
Germans and French tried to do the same. England, Russia, Turkey and Spain did that before, because it is human nature.
Pulitzer never wrote about the US extermination of Spanish teachers in Philippines for example, like modern Media did not inform about the abuses in US created wars like Libya, Syria, Iraq or Afghanistan.
Media owners today have lots of business to do, they need the masses to support them.
Most democrats were ok calling Trump Putin's puppy with no proof(because they hated the guy and benefited from removing a President using lies if necessary) and then Trump did the same thing with them(accusing them without proof of stealing the elections).
The first thing you have to do in order to be free is to read, and not see the world divided in good and bad guys, because if you do you always will consider yourself in the good guys, even when you are the bad side. Then there will be no difference between you and the rest.