I had a guy over fifteen years ago, claim that I was the only person who could see those "crackheads" - that they didn't exist at all and that I was just making it all up.
Okay... There was nothing else anywhere on the internet to show those people. No university funded stats, no government funded studies or stats, not even pictures. That was the basis for his claim that the "proof" he was demanding just could not be provided.
Now, more people are posting the whole truth on YouTube than ever before. Nobody can scrub it or hide it anymore because in the same second one post is deleted, seven more pop up. I can link to any one of them.
But, where is that Doubting Thomas now? He dropped out of sight. Embarasssed, maybe?