Both GyroF-16 and olstyn said it already.
All the homeowners did, with the clarity of hindsight, is draw attention to themselves. If the protesters were armed, like the McCloskeys claim they were, then Mr. and (especially) Mrs. McCloskey gave up every possible advantage for the power trip of running out onto their lawn and pointing guns at people like idiots.
We never would have even heard about this protest if it weren't for their overreaction. People would have gone and chanted hippie slogans at the mayor's house and gone home. The fact that not one other person in the community felt like it was worth the reaction of the McCloskeys is telling.