A week after federal agents arrested dozens of people during a military-style immigration raid of a South Shore apartment building, resident Cassandra Murray slowly inches down four flights of stairs because the elevators are broken again. Murray is disabled and walks with a limp. The 55-year-old wears plastic gloves as she holds onto a railing, pointing out urine spots and feces smeared on the wall in the building where she has lived for a decade. Murray is on her way to see a new apartment. She says her move wasn’t prompted by the harrowing raid or the Venezuelan immigrants who...