An unwelcome visitor

Saturday afternoon I went out to the chicken house to let the chickens and geese out.  Ringo, the puppy, started chasing the birds and was soon chased by the rooster and one of the hens.  He runs into the chicken house and I went in to get him.  I heard a hissing noise and looked up to see a raccoon on a shelf. It is the first raccoon I've seen around here.  We spent the next half hour trying to get it to leave. The kids were all yelling, throwing rocks.  All from a distance with a fence in between. Max was trying to get the raccoon.  The raccoon got into an old tire on the roof and Peter shot it a couple of times.  It crawled into the chicken house and died.  The chickens were pecking on it.  Is that karma, how many chickens has that raccoon killed?  Neighbors down the road had a raccoon break into their chicken house, literally tore the door apart, and killed all the chickens, didn't eat any.  Peter felt really bad about shooting the raccoon but I'd rather have my chickens, eggs and cats.  My only other experience with raccoon was years ago in Arkansas when I went fishing with my great-grandpa and we put our catch in his holding pond.  The next morning all the fish were gone. Grandpa said the raccoons got them.