If your fading memory of hippie art is Victor Moscoso posters for the Fillmore, the Berkeley Art Museum would like to update you. Their current exhibition, “Hippie Modernism: The Struggle for Utopia” is not an in-depth look at tie-dye, pukka shells, or roach clips but at the way the urge to change consciousness and society was expressed in our architecture, furniture, design, clothing. It all seemed to mind-altering then. Now it looks like nostalgic ephemera. FYI the planned Summer of Love celebration in GG Park has been put on hold, due to crowd control issues. Someone in City Hall is worried about seeing geezers running amok.