Bears are opportunistic eaters. They will go for the easiest access to food before they go after the coop. If they do end up going at the coop though not much can keep them out. My parents had a very well built cedar feeder in their yard. A bear came by one night and we watched while it opened it up like you or I would open a cereal box, no effort whatsoever.
Also, yes bears in New England can be braizen. A few years ago a man was attacked at Franconia Notch in NH. The man was walking with a group of 5 people when the bear got in his face wanting his back pack (which ironically had no food in it). He and the other 4 people were yelling at the bear, making noise with anything they had and waving their arms, all things that are supposed to deter out local bears. The bear swatted a couple of times at the man until he fell down, sniffed the pack, and ran off when it realized there was nothing there to eat. Luckily the man only had a few nasty scratches from the event but that bear was all set to take on 5 people for what might have been in that pack. I really think it's because of the fact that much of New England is pretty well populated and the bears have just gotten so used to humans that they know they have more power than us.
However, if you are carrying a gun they usually think twice, but sometimes still will go after a hunter. It's illegal here to kill a bear out of season and in season you have to have a special bear tag. People have gotten into trouble for shooting bears that were threatening them. Unless there is physical injury to the person it's hard to prove that the bear wasn't just passing through. IMHO if there is physical injury the gun was used too late. I like bears but I value human life over that of a bear!