R Twesky Z’L brings a story that he heard from his father that seems relevant to all group-based judgments:
a Chasidishe Rebbe was visiting Berlin. He prepared a grande kiddush, prefacing it with this speech: one really needs to make kiddush in Berlin. Kiddush is testimony, and you need testimony where there is a sofek. In our shtetl, there is no sofek, but here in Berlin, there is – and it is great to make a kiddush here!
Then, he suddenly stumbled in his speech, sat down and was quiet for several minutes. Then, he got up and finally made kiddush.
He then explained: I was ready to make kiddush but suddenly lost it. I realized that because I said inappropriate things about Jews of Berlin, my connection to Hashem got severed. So, I spent several minutes and resolved not to talk like that again, and got back the ability to day kiddush.