How many anti-vaccine / anti-science individuals spout that they know "everything" because they've "done their research" only to find they've learned nothing. Often recanting with regrets and tears if they, or loved ones they actually care about, get very, very sick.

Multiple ones, now, often are recanting and crying in fear when they are in the hospital due to the outbreak, afraid their deliberate ignorance will now be the thing that kills them. :-(