Small, but important, point: he wasn’t “KNOWN” to be a drug-smuggler until afterward.
My point exactly! When they discovered that he was a known smuggler and recovered drugs at the site of the shooting: investigation over! They were doing their jobs!
Now, during the investigation, had they found that this guy was clean as the driven snow, then let’s look into what these guys were doing, let’s open the flood gates on them.
But, once they knew this guy was dirty, then the rest was a waste of American tax payer dollars! And a true injustice!