The two major things you are looking for though is that they look very tight and they always look like they are smelling something. The olfactory sense is important to them.
Discrimination use the instinctive center a lot.
The corners of the eyes are slightly downcast as if someone were were in a mean squint trying to find a flaw in something you are doing. They reject and exclude what they don t like. The photo s of discrimination people will rarely have a smile on them. They can look like dominance or scholar both high brow and nuetral. They can be very perfectionistic.