Welcome. Your first instinct is to shout the lies from the rooftops!
Do not do this!
This reaction makes sense to ordinary, unbrainwashed people.
But, trust us, this is a bad move because their minds have been compromised. Their ability to use critical thinking has been compromised!
Story after story on this forum proves that this way of doing things just does not work.
Be miserly with your new knowledge and reveal small things slowly. This has been the way that has shown the most success by people on this forum.
Spend some time reading the stories of others. You will find much that you will recognize, some warnings, some advice, and much fellowship without judgment.
Welcome!