Profiling is good stuff. It's not unconstitutional. It is naturally accepted for pretty much all things. Except when it involves race, sex, or religion, few want to touch it because the SJW backlash is immense. Not profiling wastes resources and allows bad actors to flourish by easily hiding.

The constitution protects from mistreatment. Profiling is not mistreatment. Harassment or illegal information gathering are mistreatment, but they are not the same as profiling.

I'll add that I think that the severe rejection of profiling in our culture emerges from the naive narrative espoused by a subset of the electorate that people are fundamentally good.