Wow, so you know the (wink, wink) law. Gee, that's great. I know what cops and doctors do because I watched it on TV.
How do you know there was no reason to use force.
If the Shay's were arrestable (CPC 836) for either CVC 23152(a) DUI or CPC 148(a) Obstruction or for some other reason not yet known to us, and resisted in anyway, force is justified.
Mr. Serpico (cute 70's NYPD reference, By the way), force is used and lawfully justifiable for multiple reasons, such as to prevent escape, effect arrest, and overcome resistance.
Since you seem to have rushed to judgement that the officers were bullying and abused their power by only hearing the side of the parties initiating litigation for monetary compensation and recompess, it is clear that you have no interest in the truth at all, but only in that which you want to see be the truth. You realize that the only thing we have heard about this case is what the Shay's attorney has cared to share with us (a la Robert Shapiro in OJ - See, I watch TV), and the newspaper. You do realize how (in)accurate, sanitized, and generally vague published news stories are, right?
Are you able to articulate to me, Serpico, the general framework of force policies as constitutionally defined, since you know the law so well? I'm pretty sure you can't and you are all bluster, hot air, and bullshit.