CHICAGO, Illinois: US Vice President Joe Biden on Thursday pleaded for better understanding between cops and the communities they serve at a public memorial for three Baton Rouge police officers slain in a targeted gun attack. The July 17 shooting, which authorities called an “assassination” targeting police, was the latest incident exposing deep racial fissures in American society. Ten days earlier, another gunman in Dallas killed five officers, in the midst of national tensions and street protests brought on by separate recent incidents of police shootings of African-Americans captured on video. The killed Baton Rouge officers—Montrell Jackson, Matthew Gerald and Brad Garafola—were represented by three empty chairs on the stage of the Healing Place Church. Biden and US Attorney General Loretta Lynch were among the dignitaries who attended the funeral, along with hundreds of police officers.