Has this got anything to do with guns?
A lot of posts kick around laws and precedent for vehicular searches. That's the connection here, not that the thread has shed any light on the subject, really.
My 2 cents:
"Racial profiling" means profiling based on race. The classic case would be pulling over someone in a wealthy "white" neighborhood because he is black.
crazed_ss has had this happen on a wealthy local island that also has a Navy base, near where I live, though I, too, have been pulled over in the same place, from what I can tell because I was a white male driving a Jeep with a surfboard in it. I figure they don't much like sailors, surfers, or anyone else who "doesn't belong." Oh yeah, they found something to "nail" me for: a crack in my windshield, which I do not believe violated the law in California, where the crack has to be somewhere in the driver's field of vision. I was going to fix the windshield anyway, so I didn't fight it, I just fixed it.
Now anyway, searching someone simply for being Guatamalan is illegal. However, a whole bunch of Guatamalans stuffed into a van can be argued to be probable cause to investigate illegal alien smuggling here in California near the border. But this was Rhode Island, nowhere near the border, though I guess it could have been near a marina, where these people were unloaded from a boat or something, maybe... Smuggling illegal immigrants is a crime, and the evidence for prosecuting said crime generally involves something like a group of immigrants stuffed into a van.
It's a classic Catch-22, in some ways. If you can't investigate something that sure looks a lot like a crime in progress, then it's awfully hard to catch criminals. A van full of stereo equipment with cut wires would be fair game for a search, for example. Stereo equipment doesn't have any rights, and it doesn't care if you check to see where it comes from. People do care, and people do have rights. Note that no one knows they're illegal immigrants just because they're originally from Guatamala, and i don't carry citizenship papers with me, ever. On the other hand, if the police can't investigate something that looks a lot like a crime in progress, then what are we paying them for? Note that the driver, if guilty, is an actual criminal here, not the illegal aliens, who would not be criminally prosecuted, just sent to their home country.
So what do you do if
people are the evidence?
Bottom line? It's a gray area. The courts will have to decide what takes precedence, when, and where.