The 9/11 perpetrators did it primarily because of their view of US politics, warped as it may have been. Their view of their religion was actually not fundamentally uniform. Their view of their politics and of US politics was actually fundamentally uniform.

Some of those not in favor of bigoted (including racist) profiling at the airport screening checkpoints may be fine with bigoted profiling beyond the airport screening checkpoint. That one or both such groups may have trouble dealing with that distinction isn't a surprise.

Profiling those persons whom haven't committed a crime based on such targeted person's ethnicity and/or religion just creates more, bigger haystacks in which to loose needles -- that or it creates more needles.