Occasional Defense means that objectively, the victim is or is about to illegally infringe on the defendant or others, but the defendant does not realize this subjectively. For the purpose of illegal infringement, he uses force against the victim, which objectively plays the effect of personal defense.
According to the above definition, which of the following acts does not belong to Occasional Defense?
A and B have a deep grudge. After a conflict one day, A goes home and takes a pistol to kill B. they happen to meet on the road. A shoots B first, but when he shoots, he doesn't know that B's right hand has grabbed the pistol in his pocket and is ready to shoot him