The "kiss-in" to support same-sex marriage that will be held at various Chick-fil-A locations in the U.S. is the latest in a series of diverse protests that make a particular political point in a unique and eye-catching way.

Here's a look at some unusual demonstrations that have taken place around the world.

Kissing protest

The "kiss-in" protest has been done before. Hundreds gathered at a pub in central London last April for a same-sex kiss-in after two men said they had been thrown out of the establishment for canoodling. Last summer, dozens of gay and straight couples gathered for a mass kissing protest near a Mormon Church temple in Utah, after two gay men said they were cited for trespassing when they shared a smooch on the plaza owned by the Church of Jesus Christ of Latter-Day Saints.

In Chile last year, university students locked lips to demand school reforms in the "kisses for the best education" rally.

Farmer protest

A farmer sprays riot police with milk from a cows udder during a demonstration in front of EU headquarters in Brussels (Yves Logghe/Associated Press)

For years, European dairy farmers have flocked to the European Union headquarters in Brussels, Belgium, to protest the drop in the price of milk. This past July, farmers created a "milk lake," pouring thousands of litres of the white stuff onto the street.

In 2009, around 2,500 European farmers flocked to Brussels. While some protesters burned hay and tires and threw bottles at police, others pelted officers with chickens and sprayed them with milk from a cows udders. As the Daily Telegraph reported, one "jittery cow, frightened by firecrackers, sprang loose and chased an office worker down the street."

Naked protest

About 700 people participated in a march mostly consisting of naked or barely clothed people in Montreal in June. (CBC)

Stripping down is a sure-fire way to get attention for a particular cause. The Ukrainian women's rights group FEMEN regularly uses this tactic. Dozens of animal rights activists annually gather in Pamplona, Spain, and lay down on the street, topless, to protest the running of the bulls and bull fights.

Canada has also seen its share of nude protests. To reinvigorate the Quebec student protests in June, hundreds of naked or barely clothed demonstrators spilled into downtown Montreal during the Canadian Grand Prix auto race. To protest a U.S. surveillance balloon hovering at the Canada/U.S. border near Sarnia, Ont., in 2009, around 200 protesters dropped their pants for a "moon the balloon" demonstration.

Bloody protest

In 2010, Thai demonstrators, demanding a new election, poured donated blood outside the front gate of the government headquarters in Bangkok. Thousands had volunteered to have small amounts of blood drawn by nurses. The blood was transferred into dozens of large plastic water jugs, which were passed through the crowd of cheering protesters before being delivered to the prime minister's office.

'SlutWalk' protests

Women shout slogans during a so-called Slutwalk march in Belem, Para state, Brazil. (Lucivaldo Sena/Associated Press)

When Toronto Police Const. Michael Sanguinetti told a York University class that "women should avoid dressing like sluts in order not to be victimized," he was slammed for his remarks, accused of promoting a "blame the victim" mentality. His controversial statement sparked a new protest, known as the SlutWalk, in which women, some dressed provocatively, march on the streets to dispel the attitude that the way you dress is an invitation to rape.

Although the SlutWalk originated in Toronto, it has since gone global.

With files from The Associated Press