There is a difference between racial profiling and harrassment. Racial profiling just makes one race more susceptible to be 'checked' than another. I am not surprised that Arabs in this survey, and Americans overall (as they are AMERICANS) are ok with this, because just like you and me, Arabs don't want to get blown up by a terrorist.
Harrassment, in the form of poor treatment by security and airline officials, is a whole different thing.
Personally, I shudder when I read the article posted elsewhere about White separatist groups celebrating the Sept 11 attacks. I was not too surprised; after all , Timothy McVeigh blew up Oklahoma City because it was a symbol of the government -- he was ok with innocents dying.
These terrorists are alive and well, and now they know that they can use a plane as a guided missile. I would not be surprised if at least one of these groups tries a similar attack, especially knowing that the public would automatically blame an Arab on the flight, and especially if racial profiling means they would walk through security unaccosted.
Personally, rather than talk about the morality and legality of racial profiling, I'd rather see discussions about its effectiveness. Succintly, evil people come in all shapes and colors. I'd rather see more random checks (as a percentage of pax) to catch the Arab terrorist, the White terrorists, the IRA terrorist, the WHATEVER terrorists.