actor1: OPC: Oodua Peoples Congress
actor2: Police Forces of Nigeria (1999-2015)
notes: 7 killed in continued violence in Lagos slum between members of the Oodua Peoples Congress (OPC), a militant Yoruba group, and Ijaws. 4 killed including 2 police officers
target_text: actor1: OPC: Oodua Peoples Congress, actor2: Police Forces of Nigeria (1999-2015)