“It could be argued that the confrontation started when Arbery was caught trespassing.”
Not in any court of law, it can’t! You cannot pursue someone and then claim self-defense.
If trespassing had nothing to do with the confrontation then neither did the pursuit.
The fact of self defense only began after Arbery started the physical assault.
Plain and simply, Arbery started the fight.
This was the claim in the Trayvon Martin case. The Florida jury didn't buy Mr. Crumps argument that time.