It is fascinating that the USA is having a panic attack about the spread of Da'esh / ISIS by means of propaganda. It is also ironic, given the cultural imperialism that the USA has applied through the entertainment industry - and continues to do so, shaping thinking in so many ways that even in the UK, we find ourselves dominated not by the USA's sharpest minds but by the excessively puerile.
And yet the parallels of how Da'esh / ISIS and the USA spread their messages, and reinforce them, are striking.