The fifth Honk! Festival of Activist Street Bands ran this weekend, clogging Somerville’s Davis Square with delight and, on Sunday, passing in the form of the Honk! Parade through Porter Square to wind up at Oktoberfest in Harvard Square. Here are some photos that merely hint at the exquisite weirdness and creativity of the event — a Somerville-based phenomenon that at one time would have called Cambridge home, as one resident said. (Photos: Marc Levy)

Emperor Norton’s Stationary Marching Band was much less stationary than usual.

There were some 23 troupes marching, but their sheer numbers were matched by watchers spread along the parade route.

Video is the only way to get the proper sense of this contraption, a kinetic sculpture with rotating portions that made it seem like a benevolent take on the mechanical spider in the awful “Wild Wild West” movie (1999).