This video addresses one of my historical pet peeves: The belief that Constantine founded the Catholic Church.
This belief is easily refutable if you bother to research the question at a college library.
Unfortunately, many people uncritically accept populist histories that are not always rigorously fact-checked. To say the least. Stuff of the caliber of The Book of Lists.
I would also add that the idea that Constantine founded the Catholic Church rests on the implicit assumption that Catholics willing to die under Diocletian lost all spine twenty years later when Constantine imposed pagan ideas like the Trinity.