It is quite evident that some of the commentaries here (thanks for the link Fi Fie Foe) have not been in a High school in the U.S. The audio of a so called left wing teacher teaching a class sounds to me, more or less a balanced world view from different perspectives.
(You can read a better review here )
They would have known that for a teacher to even get the attention of the class they would have to engage in controversial subjects and current affairs. The class sounded quiet, and interested. Unlike most classes where the drone of canned ‘facts’ clouds most students minds to the point that they pay no attention at all and chat amongst themselves.
Students in the U.S. Today (but not in Ireland), have immense access to the internet, mass media and other alternative sources for information. They are immersed in information far beyond the textbook learning of the past. And if a teacher does not engage that information, they loose the class.
Much of the far right would love to have only their facts (read propaganda) drilled into students, without critical thinking being part of the plan. Independent thought and freedom of speech are not what they are seeking from the next generation of students.
The very fact that this recording was made (by one of the students who holds an alternative opinion), is evidence that the students have the intellectual capacity to understand the subject matter, even if they are of an opposing viewpoint.
Just stopping by to say hello and wish you well!