Unplanned turf claims segregate urban residents by social group. [causal]
This paradox is even more apparent relative to residents, particularly resident colonizers. On the one hand, the establishment of home territories contributes greatly to the spatial segregation of persons. This bar is taken over by homosexuals, that cafeteria by elderly ladies, this hot dog stand by motorcycle buffs, that section of the park by mothers with small children, and so forth. Through the unplanned, uncoordinated actions of all these individuals and groups, the pervasive ethic of the modern city that there is a place for everyone (and everything) and that everyone (and everything) should be in its place is strengthened.
Lyn H. Lofland, World of Strangers_ Order a…, loc. 774