Full Idea
In Derrida's modal reversal (where the only possible forgiveness is forgiving the unforgivable), the only possible community is the impossible community, which is a 'community of singularities' without anything in common.
Gist of Idea
A community must consist of singular persons, with nothing in common
Source
report of Jacques Derrida (later work [1980]) by Simon Glendinning - Derrida: A Very Short Introduction 7
Book Reference
Glendinning,Simon: 'Derrida: a Very Short Intro' [OUP 2011], p.82
A Reaction
Since this seems to go beyond multiculturalism, I can only see it as hyper-liberalism - that isolated individuals have an absolute status. Sounds like Nozick, but Derrida saw himself as a non-Marxist left-winger.