[quacked]

It can't be considered a fact, because it's unverifiable. The "fact" is that certain parties (museums, Vatican, etc.) claim to possess genuine historical documents that describe events that occurred in the past that Christ existed and was killed by the Romans.

I believe it's probably true, but it's important to realize that I'm taking the word of these historians and archivists on faith; I've never seen these documents, and I could not verify their authenticity were I allowed access to them.

It's only through careful examinations of what we as individuals can personally verify can we start to identify what kind of informational waters we swim in, and start to protect ourselves from "fake news".