I don't recall that Dave was driving the bus. Or that he gave the order for this lone bus driver, who was on the bus alone at the time of the incident, to do this.

"As part of a legal settlement, the band agreed to pay $200,000 to environmental protection and other projects. The band also donated $100,000 to two groups that protect the river and the surrounding area.[1] The band's bus driver, Stefan Wohl, pleaded guilty to dumping the waste in April 2005.[2]"

"On Sunday, August 8, 2004, at 1:18 p.m.,[6] Wohl was alone in Tinsley's bus and driving to a downtown hotel when he emptied the bus' blackwater tank as it crossed the metal grates of the Kinzie Street bridge.[7]"

This is why it is important to read beyond the headlines.