In wartime Europe, did people trust their neighbors? If not, how long did it take for them to regain their trust?

By “neighbors” I mean the people who live around you in your home neighborhood—not metaphorical neighbors in other communities or countries.

By “trust” I mean assuming a benign intent and regarding one another in a generally friendly or favorable spirit, rather than being fearful, suspicious, or antagonistic.

If you trust your neighbors, you would expect them to be on your side. You would turn to them for help in a crisis—perhaps even just a personal crisis, such as a family emergency or a natural disaster—and expect a supportive response; and you would willingly offer them the same.

Did the world wars destroy or foster trust among neighbors in European communities? And how did that change afterward?