"Why the – mostly misinterpreted – theory of Sándor Rácz Romano, the theory on the culture of separation became so popular? Why concepts of underclass and social disadvantage do not fit either?" asks the author. Concepts do matter, since if it were "the culture of segregation" accepted as the starting point then it would be obvious that what the culture of separation means in fact is the result of a certain economic and social development and it is not a national/ethnic