Quote from Thunderdog:
I understand your point, but I see it differently. This was a large makeshift sign placed atop an overpass. Frankly, if I were a motorist, I would prefer not to drive my car under such a sign, which may or may not be sufficiently secured. The risk of an improperly secured sign could potentially be life threatening to unsuspecting motorists who may conceivably get the message personally through their windshields. Although the policeman had to tug on the sign to remove it, how was he to know just how secure it was? And if he were to make a judgment on the fly to let it remain and a mishap followed, then he would potentially be liable because he knew about it.
Yes, there are cops who abuse their authority. But I don't think this is one of those times.