The short answer is, “When someone is beating someone over the head with it.”
Though the above should be casual to the most obvious observer, that stupid prosecutor in the Rittenhouse case clearly is unaware of this fact. Surely, if it was not covered in law school, he should be able to figure it out all by himself. Hence, my use of the adjective, stupid. He should have to have a sign with word on it hanging from his neck.
God warns us whoa to him who calls evil good and good evil. The prosecutor called self-defense murder. I think this somewhat meets the criteria. Moreover, it seems to be the practice of many prosecutors today to charge the innocent with crimes and let thieves and killers go free.
My biggest example is Fauci, who’s activities led to deaths of millions. Why is he not in jail while who knows how many innocent people people remain in prison for January 6. Where is their speedy trial guaranteed to them by the highest law of the land.
On the other hand, President Trump and many of his associates were prosecuted and impeached with bogus evidence by prosecutors, democrat representatives and a fake media, all of them on the rampage without rhythm or reason.