the guy in the apartment was a favor for the Irishman, he was gonna inspect the barrels of guns coming in from Ireland.
The Mayan that got offed was "making it right" with Clay for trying to kill him.
1st one was right, I thought the mayan that got offed was because he screwed up killing Clay, forcing the leader of the mayans to sit down with him, so the leader of the mayans had him killed. Not to "make it right" with Clay for trying to kill him