I’ve yet to see in print the fact that Anthony has claimed that he felt his life was in danger as the reason he stabbed Metcalfe. He’s claiming self-defense, but it’s not self defense if you didn’t feel your life was in peril.
Especially since he said: “TOUCH ME AND SEE WHAT HAPPENS”, egging the victim to do so, as he reached for the knife he had brought with him.
Why did he have a hidden knife in the first place? That was done long before anybody did (or didn’t do) anything to him.