The guy in the video in the OP appears to be a serious anti-Catholic prot. At the 7:00 minute mark, he says that child sacrifice is part of a long Roman tradition - and that child sacrifice happens at San Lorenzo church every Feb. 23, and that's part of a long tradition.
I stopped watching after that. That guy is probably a big fan of Jack Chick. Not that bad things haven't happened in or near the Vatican, but it's not a part of a long tradition, as this guy claims.