I'm glad this was written and has more historical examples than just Brexit. I could imagine a good portion of the questions could be originating from students. If a large political or economic event happens, it's not unlikely for classrooms teachers to task their students to understand what's happening. Search is the obvious first step for that. Even more broadly, and in line with the article, extrapolating from a s…
If you start with the assumption that your enemies are stupid, you won't have much trouble finding the evidence.
What I observe right now after the Brexit vote is the absolute conviction that brexit happened because the fact that it is xenophobic was just not explained clearly enough and the "stupid" brexiter just did not get it.