Hippies were welcomed when segregated to tourist-adjacent neighborhoods. [causal]
Note that the objection is not to "hippies" per se. They were considered a tourist attraction during the late 1960s when they remained in their out-of-the-way Haight-Ashbury district. The objection is to "hippies" in Union Square, located in the middle of the city's commercial and hotel area.
XREF: Connects to spatial politics and how counterculture is tolerated only when contained, echoing patterns of gentrification and social control.
Lyn H. Lofland, World of Strangers_ Order a…, loc. 501