Here is a video where a teacher explains ways to teach marxism within the narrow constraints of a public school curriculum. The explanation begins at the 1:37 mark on the video.
http://biggovernment.com/kolson/201...st-agenda-and-shift-culture-leftward-part-ii/
http://biggovernment.com/kolson/201...st-agenda-and-shift-culture-leftward-part-ii/