Marela, an undocumented immigrant in her 40s, stood outside the Elizabeth Detention Center in Elizabeth, N.J., on a chilly afternoon last week. She was there with a group of protesters who appear at the facility’s gates every year on Ash Wednesday to decry the nation’s immigration policy and conditions inside the center. She was there, she said, because of her friend Evelyn Obey.

Obey, 40, a Guatemalan and the single mother of a 12-year-old and a 6-year-old, was picked up in an immigration raid as she and nine other undocumented workers walked out of an office building they cleaned in Newark, N.J. Her two children instantly lost their only parent. She languished in detention. Another family took in the children, who never saw their mother again. Obey died in jail in 2010 from, according to the sign Villar had hung on her neck, ‘pulmonary thromboembolism, chronic bronchiolitis and emphysema and remote cardiac Ischemic Damage.’