Well, I'm not going to read that whole thing. If you want to pull out an excerpt I'd read it.

The reason I think it's dangerous for the masses to decide things are facts based on "aggregate impressions" is that the media is not an objective sampling. For example, perhaps hatecrimes under Obama weren't newsworthy, but under Trump they are more-so because it hits all the emotional buttons.

This would lead to increased reporting, leading to an belief of increased prevalence.

I don't remember people getting as angry about Neonazi-marches in 2010, 2005, etc, but that's anecdotal.