I have wondered the same. What compelled him to follow on the heels of the Metcalf bros as they walked into the tent?
I heard from the time they entered this tent, 5 minutes later, Austin Metcalf was dead.
I do not believe for a second that Karmelo went into that tent because it was raining. Young men are not afraid of raindrops and if that were the case he just would have left without incident.
He was there for a reason, to incite and do something, and he did what he must have went in there to do.
If he was smart like his family claims, he knew full well not to bring a weapon to the track meet. He also knew those tents were for the individual teams only. Not for just anyone who wants to go in and hang around.
It seems he had an agenda, or a reason, and when I saw that post that a gang may be after him, it rang a bell as to what that agenda possibly could be.
It is also a reason not to mention that as part of the defense because it would make Karmelo even more unsympathetic.
I read somewhere where he had been in trouble for fights at school. Sometimes small guys adopt a tough guy approach.