Profiling is a discriminatory practice where people are singled out for harassment based on protected statuses such as race and religion. There is never a good reason to use profiling, and it is generally accepted that police profiling is unacceptable and illegal in many cases, so airport security should not use profiling either.
Airport Security Profiling is a euphemism for Federally Practiced Racism. This practice automatically stigmatizes a certain demographic within our population, and supports the inaccurate belief that every terrorist looks exactly the same. This, as time has discovered, is definitely not the case, and this practice should be abolished as soon as possible.