Federal immigration enforcement activity in New Bedford, Massachusetts has led immigrant residents and business owners to avoid public spaces, with local advocates and business leaders reporting steep drops in foot traffic and sales. A restaurant owner said business fell an estimated 50 percent after a customer was detained by agents outside his establishment, and an immigration lawyer said most people detained were Central American and Mexican workers employed at seafood processing plants. Business advisers said immigrant families are now creating caretaker affidavits in case parents are detained or deported, with one longtime adviser saying anxiety in the community exceeds levels seen after a 2007 factory raid that detained more than 360 undocumented immigrants.