The Chicago Teachers Union unleashed a no-holds-barred video that slammed Mayor Rahm Emanuel for his handling of the Chicago Public Schools, while Emanuel continued to far outpace his rivals in the race to stockpile cash for the 2019 mayoral election. Cook County officials mourned the death of Dr. Donna Alexander, the administrator of Cook County Animal and Rabies Control and 27 aldermen — including seven committee chairmen — backed a bid to rename Balbo Drive for Ida B. Wells.