This jackass thought he was witnessing the stuff of conspiracy theories: "illegal aliens" being flown around secretly by the federal government for some secretive or nefarious purpose.
Only, that's not what this was. This was transportation for the Gonzaga University basketball team as they arrived in Detroit to play some kind of tournament.
The rhetoric we see in the USA about "illegal immigrants" is dangerous, the majority of it, including the "illegal" part, is untrue, and it is creating an environment of fear and paranoia that is going to get people killed.