[MSN] A new city policy requiring public signs on brick buildings warning they might collapse in an earthquake is part of a long history of white supremacy aimed at forcing black people to move out of neighborhoods, the NAACP of Portland, Oregon, says.

The group on Thursday decried the policy affecting some 1,600 unreinforced masonry buildings that are on average 90 years old, many in areas with a predominantly black population, The Oregonian/OregonLive reports.

The policy "exacerbates a long history of systemic and structural betrayals of trust and policies of displacement, demolition, and dispossession predicated on classism, racism, and white supremacy," the group said.