A frum Jew in New Jersey was involved in a car accident in which he killed an elderly non-Jewish fellow. The driver was exonerated and the court said it was not his fault.
Still, he was troubled by the fact that he had killed a person. He could not sleep at night because of it. He wanted to know what he could do. So he sent a letter to Rav Chaim Kanievsky describing the situation and asking what he could do.
Rav Kanievsky sent back a one word response: “Amalek”.
He had no idea what that meant, and he continued to be troubled by what had happened.
Eventually he decided to move. When looking for a new house, the seller of one told him that they wanted to get rid of it, because they were inheritors. their father had been killed in a car accident.
He then discovered that the father who had been killed was the one who had been involved in the accident with him. He then went through the house and discovered in the basement a box of pictures.
In the box were old pictures of this man as a young man in a Nazi SS uniform standing next to Adolph Hitler. He also found a list of names of people this person had killed when he was a Nazi officer.
He now understood what Rav Kanievsky had said. He had told him he could be calm, because he had killed a card-carrying member of Amalek!