Read the section "5. What has BLM called for?" How does this section contribute to the article's main idea? A It describes the effect of Black Lives Matter protests on federal investigations into police violence B It outlines changes that Black Lives Matter thinks have worsened the problem of police violence. C It describes the effect of bodycams on the number of reported incidents of police violence. D It outlines changes that Black Lives Matter thinks will help address the problem of police violence.