[101stAirborneVet]

But my understanding is he ran BEFORE they tried to detain him. Upon first sight.

That's not illegal in any of the 50 states.

Running from the police is reasonable suspicion to pursue, stop and detain (and even handcuff) someone, according to the supreme court.

[Mariner]

"Running from the police is reasonable suspicion to pursue, stop and detain (and even handcuff) someone, according to the supreme court. "

Not so. Even refusing to speak to an officer and walking/running away...absent some OTHER reasonable suspicion...cannot be used to ascribe "reasonable suspicion" to detain.

And it can never be used as reasonable CAUSE for arrest.