The World Health Organization's International Agency for Research on Cancer announced just two months ago that glyphosate, a key ingredient in Monsanto's pesticide RoundUp, is probably carcinogenic to humans. The time was ripe to demand a ban on the herbicide with protests internationally on May 23.

In San Francisco, more than 500 people, many dressed like honey bees and butterflies, made their way down the Embarcadero as part of the international day of protest against Monsanto. Demonstrators demanded the labeling of genetically modified foods and a world wide ban on Monsanto’s Roundup pesticide because it contains a carcinogen called glyphosate.

Creative costuming surprised tourists who came across a Fisherman's Wharf filled with bees, butterflies, and mutated evil Monsanto managers.

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