This is where it almost gets profound. The philosopher Harry Frankfurt pointed out, in his "On Bullshit", that the greatest danger isn't lack of truth or even direct falsehoods - it is when we give up searching for truth, or don't care about speaking truthfully. I.e. Bullshit.
However, whatever the people can do to demand rigour and educate themselves on the matters, pales next to a media trying to hold itself to standards. When the media gives up, we are in dire straits indeed, if not utterly lost.
Where I am from in Europe, we have pretty good media standards. But at least one of our biggest newspapers is actively working to muddle the waters for a party.
Without being any kind of expert, other nations do not seem so well off.