The short letter I just wrote my Alderman:

As one of your constituents, I'm asking you to vote against the "Event Promoters" ordinance on Wednesday. Part of what drew me to Chicago so many years ago was the vibrant artistic culture that pervades our city -- and that culture starts from the ground up. This ordinance would salt the earth of our culture, to labor a metaphor.

Update: the ordinance has been tabled. Which doesn't mean it's gone, just that there's going to be "further research".