Today, the improper is not only a philosophical issue; it is also a political question. In particular, striving to abandon the improper is central to the contemporary political agenda in many Western countries. Given the risks of a political agenda abandoning the improper in a proper way and realizing a “closed community,” contemporary philosophers such as Roberto Esposito and Jean-Luc Nancy have thought about the relationship between the proper and improper. It is remarkable that Martin Heidegger is an exemplary figure (...) in the analyses of both philosophers. I will analyze Heidegger's line of thought on this issue and how Esposito and Nancy have responded to it. Both Esposito and Nancy state that it is “impossible to abandon the improper in a proper way” in their writings on community. Every proper existence is always marked by impropriety, Nancy and Esposito argue; there is no “original” or “proper” commonality that would liberate us from all things improper. Even before one can appropriate one's property, it is already traversed by the improper. The question “how not to abandon properly the improper?” is in fact one of the imperatives behind their arguments: if indeed the proper is always already, in one way or another, related to or contaminated by the improper, it is indeed an illusion to think we can simply leave the improper behind. (shrink)