Yeah, and another complicating factor is that Facebook's control over your news feed feels invisible. How much pro-Trump content you see in your news feed feels

Yeah, and another complicating factor is that Facebook's control over your news feed feels invisible. How much pro-Trump content you see in your news feed feels like it's entirely the fault of how pro-Trump your friends are. How much pro-Trump content you see in your newspaper feels like it's the fault of the paper's editorial board, regardless of whether it's a letter to the editor or an official piece.