PSA: Just because you can dig up a Youtube video of a black guy saying racism doesn’t exist, or a Jewish person who says Hitler was right, or a woman who opposes the ability of other women to vote, it is not evidence that any of those things are true.
But, it may be compelling evidence that you are a bigot who is grasping at straws to justify your bigotry. To be sure that doesn’t apply to everyone sharing videos/posts like that, but it certainly does apply to many of them.