Wow, I just read an insightful comment on Youtube. My mind is blown.
There's always these news stories where a shooting occurs because two people were arguing over something trifling, like a radio being too loud or over an ice cream cone or over a parking spot. And then everyone says how ridiculous and crazy it is that people would fight to the death over something so small and insignificant. But those people completely miss the point. These fights are never over the original matter. They are about the escalation that results from disrespect and verbal abuse.
Everyone knows that, it isn't insightful at all.
What surprises people with these stories is how people let the situations escalate and don't stop to think, "hey wait a minute... Its just kool-aid". In 99.99 percent of conversations about proper look-aid preparation (haha) that escalate to heated arguments, one or more of the individuals will deescalate or diffuse the situation before it turns violent. So it is surprising, tragic, and in this case almost humorous (though still terrible) that a conversation about kool-aid turned into a gun fight.
Obviously people can be violent and aggressive over anything, even if someone looks at them the "wrong way".