Tower Fight Is Taken Public Beneath a banner that depicts a skyscraper towering menancingly over a child, local leaders and P.S. 234 principal Anna Switzer staged a press briefing at the school on Oct. 28 to publicize their opposition to Edward J. Minskoff’s proposed office tower for city-owned Site 5B, across Warren Street.   Community Board 1 chair Madelyn Wils said the city’s Economic Development Corp. should widen the scope of an environmental impact study for the nearly 600-foot-high building to include the psychological impact on the students who “fled for their lives” on Sept. 11. She and others called for a smaller residential building or an extension of Borough of Manhattan Community College on the site. P.S. 234 PTA president George Olsen said he hopes parents can raise $10,000 for the fight. Minksoff’s press spokesman, Steve Solomon, would not comment. “If we had to respond to everything that’s said out there we wouldn’t have time to do much of anything else,” he said.