Hooligans

You'd think things would be serene out here on the prairies, but there are actually marauding bands of hooligans that create fear in our lives.
They start out slowly each night.  Just a little bit of jumping around but then it progresses until they are running around  and harassing dogs en mass.
Finally, when they can't find any one else to attack, they resort to fighting amongst themselves.

Lock your doors.