Stop learning which sites to trust and start learning how to determine whether information is reliable or not. Critical thinking has been hijacked as a term to mean "disagreeing with the mainstream", but it's more involved than that. When you see a video like this, consider the source, then the context, then look at the video itself, question it all. Why is it being posted? Who is posting it? Are they reporting the news or just trying to get an emotional response out of you? Does the video show what it's meant to show? Is it possible it's fake?