According to the ENN (Environmental News Network) There will be activities in 15 counties around the world. Including protests against restaurants that sell frogs legs. Apparently over 100 million wild frogs are captured and killed for their legs. YUCK!
Another thing they are trying to bring to light is the use of the herbicide Atrazine. which is linked to the chemical castration of male frogs. If you want to read the whole story check out ENN.