The guy that taught my last class (a former cop) would have probably used this as an example of what not to do. In fact, he did that with a case here in the Houston area. An old retired man saw a couple of scumbags robbing the house of neighbors who were out of town. He called the police, but got tired of waiting and told the operator he had a gun and was going to do something. He shot and killed the two guys who turned out to be illegals from Colombia. He was eventually either not charged or found not guilty, but the instructor said the old guy probably burned through a lot of his life savings in order to keep from going to jail. Our instructor warned us that if we are going to carry a gun for self defense we need to avoid situations like that of the old man. I'm sure he'll be using the Arbery case as an example in the future.
Sounds like an indictment of a failed system of justice. I've often pointed out the only sort of "equality" the constitution guarantees is equal application of the law, but the rich can hire great lawyers to get them off while the poor cannot, and therefore we have a very unequal system of justice.
All lawyers should be paid for by the government so that people don't have to go bankrupt to defend themselves.