So I guess being a white guy in a black neighborhood warrants suspicion as well?
I don't see how a report of entirely legal activity can be the basis for a seizure of one's person when the constitution is on the other side of the balance.
There has to be evidence of crime; here there was none and not even a serious allegation otherwise.
Someone out of place, or meeting relevant information obtained, given the totality of the circumstances may warrant an investigatory stop.
If a person called 911 and reported that a man in a brown jacket and a briefcase, was yelling at people and waving a gun around at 5th and Main St......Are you telling me that the police don't have the authority to stop and question a man meeting that description at that location?