> deliberate, systematic manipulation of information

And, what are we doing with those facts? We're manipulating them lol

It's using information to influence public opinion in a calculated manner. Said information can include facts. It can even be entirely factual.

Manipulating the feed of a social media website for the purpose of swaying the viewer's opinion is a cut and dry example of propaganda. Doesn't matter who does it or whether the information displayed is factual or not. Those things make zero difference.