The Averiech lived in Israel, not the US
Yes he was unstable and it was exerserbated by religous frenzy. When you start calling everyone names like Amalek and sinners ete, for some people it gets to a point where nobody is a Tzaddik and even the Gadol HaDor is a Koifer.
People need to look at what they reap, what you reap, will sow and blossom.