Unions/rats
In NYC, unions put up this huge inflatable rat in front of buildings that hire non-union workers, or simply cross unions in any other way. Seems like a pretty outrageous thing to me, buildings should be able to hire whomever they want, union or non-union, but there may be a more complex story behind it that I don't know. Here is a pic of the inflatable that has been in front of the Empire State Building (across the street from it) for a few weeks now:


