A circus dog performs in costume during a free public show to protest Mexico City's ban on circus animals, other than horses and dogs, in Mexico City's main square, the Zocalo, Tuesday, July 22, 2014. Mexico's “circus wars” are heating up, with a growing movement to ban circus animals meeting rising anger from circus workers. Circuses say threats of violence against them have been posted online. (Photo by Rebecca Blackwell/AP Photo)
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