Whenever we travelled to offsite offices Mohammed 100% of the time was picked for bag check, while Kevin was not picked once.
Mohammed was white, and Kevin was black.
It was completely racist, and never random.
I fixed it by filling out a form requesting a review, after which I received a “redress number” which could be entered into my booking information. It reliably stopped after that.
It may be a racist result but there is a pretty reasonable and understandable reason it happens, ignoring the legality and morality of that kind of tracking as well.