"So if we can’t regulate the 'news' or even stop trolls and foreign operatives from inciting Americans, how can we activate the 'immune system' of democracy?"
For as long as I have been out of college I have been actively promoting critical /science-based thinking. I look around me in the USA and it seems that NO organization is doing anything to improve the dismal display of magical thinking and ignorance. Click on the link below for a brief video presenting what OTHER countries are doing to improve the situation: