Localized fishing is wrong. If they are sweeping the city, then fine. If there are rumors about dirty bombs, then by all means sweep the city looking for excess radiation. If they are targeting specific people, then present evidence and get a warrant.
I would be very unhappy about targeting stereotypes, becasue that would make it a lot easier for whackadoos to use a nice blonde, blue eyed girl to make things go away in a flash. At the same time there is no profit in ignoring middle eastern males between 18 and 40 just because it's not PC. There's got to be a balance somewhere.