What those ignorant of history (such as OP?) fail to realize is that in the period from first settlement in North America by Europeans up to only the past century or so, those living in rural areas had to deal with both four legged and two legged varmints.
Four legged could include bear, wolf, large cat(puma), and even none legged such as rattle snake. Arms(weapons) of one sort or another helped increase one's chance of survivng an attack.
Two legged sorts could be the occasional roving criminal sorts and on occasions also tribes/war bands of local natives~"first peoples"~Indians, ... Again arms(weapons) would prove helpful in defense. Local militias were often "organized" to deal with these potential threats, and later also for a more military purpose. At time of the War of Independence, many local militias were left over from a couple decades prior and their use in the French and Indian Wars.
There was no "9-1-1" to call for help in 1775.