Hey friends it's your favorite Righteous Preacher of the Holy Word here to remind you Yet Again about Lashon Hara.
Lashon Hara is a despicable sin condemned by HaShem the god of the Jews. It is when you spread bad things about people which may be true but which have no useful or productive purpose to be brought up. The classic example is bringing up a mistake someone made a while back which they have since already apologized and atoned for, and have not made again. It hurts community and hinders learning