Though it's a bit hard to see (click on the photo for a larger view), the longggg mural says “Support public education!!” It was on the north side of Broadway, across from the corner with Bryant Avenue, on February 28th.
Jerry Peek's images are public-domain. For non-profit use, he'd appreciate a mention of his name and JerryPeek.com. For profit, please ask first from the TucsonArt.info contact form; give the title of the blog entry, which image, and what you'd like to do.
For full-size versions of these shrunken photos — for instance, to print in a magazine — Jerry has them.
(Jerry is a volunteer who loves to show you murals, and your kindness will help him go on.) Thanks for reading!