BALTIMORE (AP) — Antoinette Perrine has barricaded her front door since her brother was killed three weeks ago on a basketball court near her home in the Harlem Park neighborhood of West Baltimore. The drop in arrests followed the death of Freddie Gray from injuries he suffered in police custody. Police Commissioner Anthony Batts said last week his officers "are not holding back" from policing tough neighborhoods, but they are encountering dangerous hostility in the Western District. At a City Council meeting Wednesday, Batts said officers have expressed concern they could be arrested for making mistakes. There are people, and they've said this to me, 'If I get out of my car and make a stop for a reasonable suspicion that leads to probable cause but I make a mistake on it, will I be arrested?' They pull up to a scene and another officer has done something that they don't know, it may be illegal, will they be arrested for it? Protesters said Gray's death is emblematic of a pattern of police violence and brutality against impoverished African-Americans in Baltimore. The fallout from Gray's death prompted the mayor to ask U.S.