Part of the problem is that governments keep people from carrying out armed self defense — we aren’t talking about counter jihads here, and certain posts such as priests and nuns may call for the people themselves to be pacifists — but the installations where they live ought to be able to be privately guarded. And ought to seriously consider such guards, or letting others volunteer.
Allah Akhbarbarians are often cowardly, but without even a minimal thing to fear, they get to work depredations without push back.
Also, they should be deported where they were imported.
People who actually want to try to evangelize them shouldn’t be prevented, though they should be forewarned that a martyrdom is very likely in their future.
You have hit it right on the head. An armed society is a polite society.