WBEZ Updates The Sounds Of A Chicago Teacher Picket Line By WBEZ Staff Oct. 18, 2019, 6:45 p.m. CT Listen 3:48 WBEZ Updates The Sounds Of A Chicago Teacher Picket Line By WBEZ Staff Oct. 18, 2019, 6:45 p.m. CT Listen 3:48 Hear the sounds of a Chicago teacher picket line by clicking play above.