> It's about numbers. As sien noted earlier "So about 50% of US citizens you would treat like holocaust deniers/flat-earthers? http://www.pewinternet.org/2016/10/04/public-views-on-climat.... "

That makes it clear you don't understand the problem.

This isn't about scientific consensus (which they can deploy reasonable sounding experts to "debunk") but literal fact denial of events (such as shootings and arrest records) that happened in the previous 1-5 years.

Once a group of people start arguing that events that occurred a few months or a year ago simply _did not happen_ because it is wrongthink it is no longer a political animal but a cult. It is at that point you can't "socialize" those people and you need to seek alternatives.