There's not that fine a line between cooperating with law enforcement and unreasonable search and seizure. Being asked to identify yourself is not out of line, and is compelled legally in most states. The "where are you going" thing verges upon onerous, but is understandable coming from an officer attempting to determine whether our FReeper don-o was cruising around the neighborhood, looking to break into cars, since he fit a description that was provided by a concerned citizen, who had observed someone who looked very similar, peering into parked cars.
“There’s not that fine a line between cooperating with law enforcement and unreasonable search and seizure. Being asked to identify yourself is not out of line, and is compelled legally in most states.”
The requirement to provide your identity is only required if a crime has been committed, correct? So the correct response would be to ask what crime I was suspected of? Peeking into cars is not a crime although it may be somewhat suspicious.