Now, just so my opinion of police is not misunderstood ("skateboards" 'n' whatnot), here is a perspective you may or may not have considered:
You've had a fucking shitty ten-plus-hour shift in which you had to break up a number of fights in some douche-magnet club (with no duty-belts full of toys to help, and backup nowhere near as fast as it should be). You've had to write up a number of incident reports listing the number of punches you've eaten, bottles swung at you, and any other stupidity you've had to deal with without losing your temper, regardless of the provocation.
It's 0400 and you're finally heading home to your family. The club district, being replete with venues that all close at the same time, is full of morons calling each other out, throwing down, whatever. To avoid all this merriment (also, you're known in the district) you decide to walk home via a relatively-quiet side street.
You're about halfway home when--just like the week/night before--a cruiser pulls up beside you. Why the officers in it aren't on the district's main drag, where there's obviously actual **** for LEOs to deal with, you don't know. You're asked to wait while your ID is checked. While this is going on, the officers--plainly nervous about something (but it can't be anything you did, since you've been totally cordial and co-operative)--have called for backup. Soon there are two, then three, then up to six cruisers parked next to you while the young guns who first stopped you (there's no way they could even have been born when you started breaking up fights to pay your tuition, decades before) dig and dig and dig for anything at all. (Full disclosure: I have no criminal record, have never been arrested or charged and have not so much as a parking ticket to my name).
Their apparent nervousness turns to disappointment, then seeming resentment, as they find the person they stopped had no reason to whatsoever to be stopped (other than the obvious fact that they didn't like the way he looked). Unable to find anything after a good half-hour of database-fu, they realise they must either charge you with something or allow you to continue your homeward journey.
That is a description of my walks home about 50% of the nights I work. More than one city. It's been this way for as long as I've worked the stupid fucking jobs I've had.
See? No lib-left whining, no skateboard.
Only the observation that people might view police with a less jaundiced eye if the latter would just go after criminals and leave ordinary people the **** alone. If you can't fight actual crime and must rely on annoying regular folk to justify the tax dollars spent on training and equipping you, get another fucking job. This is not only a matter concocted by the media. It's a result of personal experience, and not just mine: it's one shared by all too many ordinary non-criminals.
EDIT: Apologies for the wall of text.