let us be calm and wise

There are ways of creating communities out of circumstance - see school districts, churches, community centers, libraries, and so forth - but yes, it is more difficult in some places to create a strong sense of community around 'people who live in neighborhood X', or even 'people who live on street Y'. I still think it's possible, and that sometimes contributing to growing it can be as simple as smiling or chatting briefly with the people around you.