(This one looks like a bomb.)
The ads (virtual Lite-Brites) were part of a marketing campaign for the wacky cartoon produced by Turner Broadcasting.
I'm not sure what the incident says about Boston. The thing looks like a child's toy mounted to a bridge underpass. I'm not sure that I would have thought it was a risk when I saw it. It looks like artwork or an advertisement to me.
The entire day was impacted by a motorist's anxious call this morning after seeing a suspect device which looked like a bomb. This first finding occurred in Sullivan Square. Within minutes Interstate-93 (the north-south artery through the city) was shut down. The traffic built up through the entire morning commute, delaying thousands of people.
At this very moment, the Fox 25 news copter is circling above a firetruck where troopers are struggling to remove a lite-brite with a creature sporting an odd, death's head grin.