Shame shame shame...

It's kinda cool,I would give him/her a break

no... i do that all the time

Don't tow it,... Just put a ticket on it and leave. ;-)

Kick it over and run.

Give it a parking ticket ... return in an hour or two ... if still there, TOW it.

Leave them a note: This is your only warning, next time I am towing this baby to my friend tjoebaxter:):) And her children will use it as there toy!!:):)

Give us a better view of the area! Obviously it says "No Parking" on the wall behind, but if it's not private property or blocking a business, or public property and not legally marked as "No Parking", then it just MIGHT be legit to park there! If it IS illegally parked, ticket/tow/warn as appropriate, based upon circumstances and the individual owner's behavior. Seriously, though... If you're a police officer, then I trust your johnny-on-the-spot judgement. I've been pulled over a few times for speeding over the past, er, 'few' decades. Never ONCE was it not a legitimate pull, either. I was at the mercy of the officer and the ticket came or not based upon my behavior, the circumstances, and the officer's understanding of the conditions in the area. Sometimes I got a warning, sometimes I got a ticket. One time I'm pretty sure I got a ticket because the officer wanted to make an impression based upon his personal knowledge of the accidents and deaths in the particular area I was pulled over in. Can't blame him. He has a tough job. So...tow or not, it's YOUR decision. I will not presume to gainsay your authority either way!

whistle loudly as you walk past and pretend you didn't see it

No, give it to me, I don't have a vehicle!

Ah tow it; imagine their excitement when they return and see this setting there:

Leave it alone. Who is it really hurting anyway

Re-position the bike so that it faces the wall, get some white paint and write "DUH!!!" below "No Parking".

In all honesty, that looks more like graffiti than an actual legal notification of no parking...let 'em skate!