Art project? A fucking bunch of marketeers were behind this, attempting to abuse public space, probably having ruined their brains with snorting coca.
Hey, just because you don't like something or think it's lame is no reason to blow it up! And I'd say the marketeers didn't do a bad job, they got the publicity they were looking for, didn't they?
I expected such an answer. Let me guess, you aren't grown up, i.e. > 30, and find people doing stupid things great. E.g. you liked the Jackass series in TV? And are a Southpark fan? You are still in that age where you think doing stupid things is cool, annoying as many people as possible is cool, stealing from the public domain and abusing public space is cool.
No, let me tell you, this Boston thing was done by some stinking marketeers who thought it is cool to annoy as many people and fuck them virtually, in the name of a completely stupid, pointless, made by idiots for idiots, comic figure.
Some day you will grow up and figure out one simple thing. Idiots are idiots and aren't cool.