Can We Please Get Tangible?

Alright, here's a scenario for you. You're a cop on the border (with Mexico), and you see this dude at 3 AM going through a stop light. It looks like he's the only person in the vehicle. But, when you get up the vehicle, you see that there are an additional 5-6 Hispanic looking individuals hiding inside of it. Me - I personally don't have a problem with you, the officer, asking these 5-6 individuals for identification. That, in my mind, IS probable cause. And, yes, if in fact the new Arizona law were to have as its focus these types of scenarios, then, yes, perhaps I could eventually support it. IF, I'm saying........................................................................................................If, however, there continues to be a vagueness to the law (especially, I'm saying, as it pertains to this whole issue of probable cause), dicier scenarios, not only would be possible, but, HELLO, expected as well. For instance, what if a dude is just standing on the street corner (a day laborer, perhaps) - does the new law allow/mandate that the police officer go up and question HIM? How 'bout a Hispanic looking fellow who literally does nothing more than spit/flick a cigarette butt onto the sidewalk (the police, of course, ignoring the hundreds of whites who do literally the same thing) - does that same cop have the right to approach him, too?.........................................................................................................I don't know (about this Arizona law), folks. It really sounds like we might be needing a lot more in terms of specificity here.