Watch People Paint Ads on NYC Buildings

These days, most advertising is delivered to us via some kind of screen, from tablet to phone to computer to TV. But in New York City, some workers are getting out brand messages in a much more analog way: By dangling high above the city and painting them on walls. Voactive made a short film about these painters—who call themselves "Wall Dogs"—which you can watch below.

The job is dangerous—if a part fails, and the rig falls, it could prove deadly—and requires incredible precision. So why do they call themselves wall dogs? "Because we are chained to a wall all day by our safety harness, and we work like dogs," says one worker.