CEDAR RAPIDS — Decrying “subsidizing the demolition of our city’s heritage,” historic preservation advocates are planning a demonstration Monday afternoon in front of the Bever Building, 417 First Ave. SE, before the 1923-built structure is demolished. This is the latest in a series of demolitions or scheduled demolitions of historic properties, including a former Sinclair gas station structure in the Automobile Row District and an early mansion to make way for a parking lot for a Physicians’ Clinic of Iowa expansion, according to Save CR Heritage, the group organizing the event.