... hence the thread title.
It wasn't a very intelligent allegation now was it?
This is gibberish layered in subjectivity three levels deep. You could be talking about any church group, any recreational club, any extracurricular activity, any political party, any athletic team, any civics group, any large conglomerate, any small cooperative, any academic institution, any labor union, any homeowners' association, any neighborhood watch, any bowling team, any country, state, province, urbanization, department, assembly, collective, etc. In fact, I can't think of any group to which this does not apply.
You should have written "They need air so they breathe" and it would have been equally applicable but less subjective.
What random word generator did you use for this clause?
Bonhoeffer wasn't particularly interested in being informative or insightful.