First off, this whole thing has been discussed in detail in another post. Forgetting that for a moment, I will go ahead and give my 2 cents.
As anyone reading my sig. line might be able to guess, I am not big on the government trying to take our freedom. However I don't have any real objection with them finding out who is a scuba diver. We don't really know what they are doing with that information but I would assume it is something along the lines of compiling a list of recently certified divers and then cross checking it with a list of, for example, people claiming to be Saudi Arabian, and in the country on expired student visas, just for one possible example. Before anyone gets pissed of by my opinion on this topic you might want to go find the other post and read it first, just for some more info.
On the topic of racial profiling, that REALLY PISSES ME OFF, but not for the reason that everyone else seems to get pissed off. I seem to be one of the few people that sees this attitude of "we are being attacked by young middle eastern men, but we can't watch out for young middle eastern men because that is racial profiling" as a completely asinine attitude. How anyone think that security people need to be searching little old ladies and balding white men just as much as they need to search 25 year old men with names like Akmed Abdul is completely beyond me. How about this, if the KKK started a full on terrorist war against the African American community by suicide bombing black churches and people set up security check points at the front door to all churches, and then these security guys started searching only WHITE people, and they didn't even search any black people at all, well wouldn't that be RACIAL PROFILING, guess what, it would, and I would support it. ONE HUNDRED PERCENT!
Man, I wonder if there is anyone I didn't just piss off.