Florida law also says that a person is justified in the use of deadly force and does not have a duty to retreat if he or she reasonably believes that such force is necessary to prevent imminent death or great bodily harm to himself or herself. The shooter was not struck. He was not attacked. The victim had no weapon. Nobody in their right mind could possibly classify this as a situation where deadly force was justified.
Throwing “anything” at someone constitutes assault. Maybe the texter also verbally threatened the old man and the old man felt he was in danger.
Betn this gets thrown out.