If you actually care to be informed you will at least try to find a source yourself first, even to use it to disprove me.
Expecting others to put in the work to authenticate your claims, by sending them on wild goose chases on Google that might or might nor yield the same results you got, is a recipe for getting overwhelming amounts of disinformation.
As it's way easier to casually claim an unsourced falsehood, than it is to research a topic and debunk that falsehood with credible sources.
A better response is, "I see it different, here's a source I'm providing or story of personal experience that suggests why. Do you have other context or information that could help me understand your position?"