Kevin Kvasnicka (L) and Jesse Gonzales openly carry firearms as they watch U.S. Republican presidential nominee Donald Trump speak on a big screen television along East 4th street during the Republican National Convention in Cleveland, Ohio, U.S., July 21, 2016. (Photo by Adrees Latif/Reuters)

Supporters of former Democratic presidential candidate Bernie Sanders hold up posters at a “Black Men For Bernie” rally to gain support for third party candidates and protest the DNC during the 2016 Democratic National Convention on July 27, 2016 in Philadelphia, Pennsylvania. (Photo by Patrick T. Fallon/AFP Photo)

A freediver uses weights, yoga and camera tricks to create the illusion of walking underwater for a film which took three years to shoot and was completed in 2013 in El Hierro, Canary Islands. Like a scene from a Hollywood science-fiction movie, this trick footage shows a man apparently walking on water. The underwater film was shot by biologist Armiche Ramos and brothers Armando and Francisco del Rosario, who used their expertise in freediving to create the illusion. No computer graphics were involved in the production, with the team relying solely on their own skills – and a few hidden secrets. (Photo by Ocean Brothers/Barcroft Media/ABACAPress)

Desiree Urban is painted at Columbus Circle as body-painting artists gathered to decorate nude models as part of an event featuring artist Andy Golub, Saturday, July 26, 2014, in New York. Golub says New York was the only city in the country that would allow his inaugural Bodypainting Day. (Photo by John Minchillo/AP Photo)

Derrick Campana kneels beside Angel Marie, a three legged mini horse who wears a prosthetic leg made by Campana, at Animal Ortho Care in Sterling, Virginia, U.S., March 27, 2017. (Photo by Kevin Lamarque/Reuters)

Revellers with their bodies and faces painted attend the "Zombie Walk" parade in Sao Paulo, Brazil, November 2, 2015. (Photo by Paulo Whitaker/Reuters)