The finance staff had alerted city councilors about the negative effects, but a vote was still called off just hours before a contentious meeting.

The referendum effort would prohibit buildings that encroach on scenic views throughout the city, including views of Portland Harbor and Casco Bay.

Budget decisions include whether to close the city’s overflow emergency shelter, General Assistance to immigrants and more than a dozen layoffs.

Police will ask for ‘voluntary compliance’ but also may pull over motorcycles that lack an inspection sticker.

A news conference Thursday comes after several incidents in Portland and protests and tension around the country.