The folks at Yes Lab—which describes itself as “a series of brainstorms and trainings to help activist groups carry out media-getting creative actions, focused on their own campaign goals”—are organizing a drum circle in front of Mayor Bloomberg’s building on East 79th Street, starting tomorrow at 2 pm. The group is billing it as a 24-hour event, but we’re putting the over/under at more like 24 minutes.As the announcement says, “Tie-dye, didgeridoo, hackeysack welcome! No shirt, no shoes, no problem! And if you don’t have talent, don’t worry: FREE DRUM LESSONS offered! Also on offer: collaborative drumming with the police!” We’ll see.