Societies tolerate activities only when confined to designated zones. [causal]
So, too, soliciting by prostitutes in many cities is tolerated only so long as it can be contained. Having set aside certain public areas for certain activities, city fathers and populace alike look askance at any spill-over.
DEFINE: Illustrates the principle of spatial containment as a mechanism of social tolerance.
Lyn H. Lofland, World of Strangers_ Order a…, loc. 366