I was reminded of the trend of Milkshaking a few years ago. That wikipedia article includes a quote from a Vice Article on the trend that refers back to Serbian resistance as well.

But there's a method to all this dairy-based madness. Milkshaking can be seen within a tradition of nonviolent civil disobedience known as "dilemma action". A term coined by Serbian activists in the 1990s, dilemma action creates a lose-lose situation for the opposition. It’s a genius move reserved for some of the absolute worst people in our society, because there’s no good way to respond to a milkshaking: do nothing and you look like a twat, or fight back and look like you're overreacting. Plus, a milkshake will really mess up your suit. Still, that's not to say you should go out and do it, unless you want to risk arrest: the guy who milkshaked Farage has since been charged with assault, after all.