Yeah, but, what if I said "fake news" and just pretended that the video evidence didn't exist?

And then what if when you showed me that the video was real, I just denied that the video showed what you claimed it did?

And then what if when you insisted that the video is genuine evidence of what you claimed, because it is, I just called you brainwashed or mentioned George Orwell or something?

And then what if when you pointed out that I'm literally doing the thing in 1984 where I deny the evidence of my own eyes because it's irreconcilable with this momentary state of a transitory reality that my messianic leader has impressed upon me, I just called you a libtard, blocked you, and felt like I won the argument, the video is still fake news, and we were always at war with Eastasia?

Point being, Trumpists can't be reasoned with, because they didn't enter these positions through reason in the first place.
Trump may be heading out of the Whitehouse in the next few months, but Trumpists, of which there are 70 million, aren't going anywhere. It's a recipe for disaster.