” and chose to ignore the request to leave, which tells me he is the aggressor because he didn’t comply with the request.”
No, that simply means he said no to another high school student. At that point Metcalf decided to go hands on. Metcalf was the aggressor. When told no, he shoulda got the coach or security.
Two idiots collided.
So Anthony unzipping his bag, reaching inside the bag, while telling Metcalf, "Touch me and see what happens” wasn't threatening or aggressive? Anthony was in a place he wasn't supposed to be, and was told to leave. He didn't, and escalated the situation because he refused to comply with a simple request. The fact that he had a knife with him, and chose to use it to stab someone who didn't have a weapon, instead of simply leaving when asked, tells me that Anthony was the invader, the aggressor, and the murderer.
You can put lipstick on a pig, but it's still a pig. You can make lame excuses for someone who stabbed another student to death, when he wasn't even supposed to be there, and chose to stay and escalate the situation, but he's still the aggressor and the murderer. Anthony had the option to leave, and not let the situation get out of hand. He chose not to, brought a weapon to the show, and holds full responsibility for what happened next.