And what is the matter with cop observing from a distance instead of detaining and interrogating an innocent man? No crime was broken...only white fear.
It's not white fear by the cop. Maybe by the store owner. And, that's the point. The cop want's to find out if it's just white fear. You are suggesting, I think, that the cop could do that just by following the guy. The cop could legally do that, because there's no constitutional right to not be followed. But, practically, there are at least two reasons to stop and talk to the guy. First, why play on some guy's paranoia, esp a black guy who may have real reasons to be afraid? Be upfront, and the cop was. "how's your day, somebody mentioned a crime occurring so I'm just checking out the neighborhood .... yadayadah." Second, there's no doubt the cop has no idea why the guy is walking or what he's up to. For all the cop knows, the guy may just have been held up or had his life otherwise wrecked. All the cop did was .... ask.