Ald. Rossana Rodriguez-Sanchez, 33rd, claps as Mayor Brandon Johnson delivers his budget proposal for 2024 on Oct. 11, 2023, at Chicago City Hall. (Eileen T. Meslar/Chicago Tribune) The movement Black Lives Matter arose and grew following the killings of Trayvon Martin, Michael Brown, Eric Garner and George Floyd, among others. At the time of those deaths, especially the murder of Floyd by police, some insensitive people insisted on directly countering “Black Lives Matter” with “All Lives Matter,” a statement that, while factually true, was thoroughly oblivious to the raw pain many Black Americans felt. But on Tuesday, an account on...