re: Which conspiracy theories are indisputable ?

I know for a fact that they aired news footage of the sandy hook shooting the day before it happened.
The guys at work started talking about it the next day, and I said, "oh yeah, I saw that on the news yesterday."
To which they replied, "well it happened today, so that must have been something else."
I went about my life thinking I was mistaken. Then that was brought up as evidence that it was a false flag.
I'm not saying that it did or didn't happen, but I am saying that running a news story about it the day before, certainly happened...