There was heavy manipulation of the media in favor of Clinton during the last election. Reddit, for example, was very active in promoting pro-Clinton news and downvoting pro-Trump news. It was so obviously an orchestrated campaign it was actually funny. CNN was relentlessly pro-Clinton. Clinton bought the machinery of the DNC to ensure her primary victory.

Now, I'm not suggesting any of that is or should be illegal. But any discussion of Clinton losing because of propaganda should consider the converse.