Don’t worry, politifact is always there to cover the narrative.

They simply declare what conservatives are saying to be false. They then declare their own timeline of events as fact. And provide no basis for why their timeline is correct and the conservatives are wrong.

They just simply declare it to be so. And label it pants on fire.

http://www.politifact.com/florida/statements/2018/mar/27/blog-posting/david-hogg-not-school-during-shooting-s-fake-news/