You Can’t Fact Check Propaganda
Could it be otherwise? Probably not, at least at the moment.
"...at least since World War II, the most effective propagandists have insisted that propaganda should tell the truth."
You Can’t Fact Check Propaganda: A common media practice misunderstands the nature of its quarry.
Fact check sites aren't neutral. They have their own agenda. If you rely on them as the be all end all of truth, then you will be propagandized by them.