Extreme cases always test our commitment to a free society. A free society depends on our general confidence in the power of reason, that people have intelligence and good judgment enough to handle the cognitive demands of living freely.

Yet now our current concerns with social unrest, triggers, and inflammatory language and images has led some social-media giants curating speech. Some history teachers have found their online course lessons on German history blocked because they contain archival footage of Hitler giving a speech or a Nazi parade. Thus the censorship debate has now become main stream.

We must decide as a society, should dangerous ideas always be allowed so that they can be confronted openly? Is sunlight the best disinfectant?