Activity

That’s still about 30 million people (if you include their kids in the estimate).  And they are, of course, spread out geographically to some extent.

I would go with the internet.  I would suggest Cambridge Analyticizing them.  And thereby, not only, gradually and subtley influencing their opinions, but also enlisting some of them (without their knowing they were being enlisted or by whom) to do what they do best: evangelize. (But now their efforts would work toward sewing confusion and internal conflict as to some of their dogmatic ideas.)

What!?  You say I am plagiarizing stuff the alt right and Russians already do to regular Americans all the time?

Well I don’t think they have a copyright.