Boobs of all shapes and sizes crowded the boardwalk at Venice Beach Sunday afternoon for the annual "Go Topless Day" march, an event that took place all over the globe.

The kooky little tradition has been entertaining residents and thrilling tourists at Venice Beach for the past five years.

Participating women covered their nipples with latex nipple lookalikes, while men in support of the cause donned red bikini tops to protest unequal topless laws.

The protest is led by the Raelians, a religious movement that believes human beings were created by alien scientists called the Elohim.

Because women and men were created equally, say the Raelians, both sexes should have the constitutional right to go topless. The alien origins behind this movement probably won't appeal to a mainstream audience, but as nude resort owner Tom Mulhall asked in a recent blog post, why not go topless?

Do you think topless sunbathing is wrong? Well back in the 1930's, American prudes in positions of power thought the idea of a man taking off his shirt at a beach in the US was out of line and immoral.

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These prudes of course were wrong and out of touch with the average citizen. Thousands of men started protesting shirtless at the beaches on the east coast in the mid 1930's. Hundreds were arrested. But, by the late 1930's, politicians and judges had matured and realized it was not shameful or ungodly to see a man at the beach without a shirt.

Watch this NSFW video to hear protesters proclaim, "Free your breasts, free your mind!" and check out LAist for photos of Sunday's topless march

Earlier on HuffPost:

Photos below from last year's event. WARNING: NSFW
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  • Go Topless Day (NSFW)

  • Nadine Gary

    Nadine Gary, president of <a href="http://www.gotopless.org/" target="_hplink">GoTopless.org</a>, explains that despite the Raelian root of the protest, "Go Topless is for all people. There are Christians, there are Buddhists, Muslims, and Jewish people. We all have a different belief system, but we all have a body that has been repressed and needs to be liberated."

  • James Rich

    James Rich, in the red bikini top, leads the protest. Part of the Raelian movement, Rich says, "It's not about the boobs, it's not about the breasts. It's about equality."

  • Melissa Ralph

    Melissa Ralph, who is seven months pregnant, is at her first topless protest. "I'm told that at I'll have to breastfeed at a restroom if it comes down to it, in some places," she says. Ralph continues: "I don't want to have to take my child into a dirty restroom when it's more of a dining room situation. You don't bring your own food into the bathroom, so why should a child have to feed in the bathroom?"

  • Aaron Smith

    Aaron Smith, also at his first topless protest, says "anything that's illegal should only be illegal if it's stomping on the rights of other people."