Similar to BDS (Bush Derangement Syndrome).
The media is howling because they didn't get their chosen candidate elected like the last two occasion.
You are only allowed to see one side of the argument.
You are told not to visit web sites or read publications that are contrary to the main stream media, the "narrative".
You are told that they are "fake news", presented by kooks, conspirators, liars.
You are taught altered, sanitized history. Your culture is being destroyed.
Here is an analogy:
Muslims are taught that all religions except Islam are false and to be destroyed.
All ideologies except the left (and Islam) are false and to be destroyed.