Shipping containers sit idle at the ports of Los Angeles and Long Beach, California in this aerial photo taken February 6, 2015. The loading and unloading of cargo freighters has been suspended at all 29 U.S. West Coast ports this weekend because of chronic slowdowns on the docks that shippers and terminal operators have blamed on the dockworkers' union, the companies said Friday. (Photo by Bob Riha, Jr./Reuters)

A member of India’s Dongria tribe faints in trance during the two-day long Niyamraja Festival atop the Niyamgiri hills near Lanjigarh in Kalahandi district, Orissa state, India, Sunday, February 22, 2015. Every year, members of this indigenous group celebrate this festival sacrificing animals and birds in worship of their deity. (Photo by Biswaranjan Rout/AP Photo)

A young Hindu girl sits for a ceremony where she and other girls are worshipped as “Kumari”, or living goddess, during Ram Navami festival, at a temple in Kolkata, India, Saturday, March 28, 2015. Ram Navami marks the birth of Hindu God Rama. (Photo by Bikas Das/AP Photo)

Young people fight for fun with their pillows, during the International Pillow Fight Day at the Place des Grottes, in Geneva, Switzerland, Saturday, April 4, 2015. The annual International Pillow Fight Day takes place in hundreds of cities around the world. (Photo by Salvatore Di Nolfi/AP Photo/Keystone)

A police poses on the durians during festival durian on the giant mount of durian at northern slopes of Mount Arjuna in East Java. Each year, nine villages in Wonosalam district hold a festival to give thanks for an abundance of this stinky, spiky fruit, which they pile in a 10-meter-high pyramid and distribute among the hungry masses. (Photo by Sigit Pamungkas/JG Photo)

Visitors look at graffiti art created by Brazilian artist Image during the 3rd annual Graffiti Fine Art Biennial International exhibit, at the Pavilion of Brazilian Cultures, in Sao Paulo, Brazil, Tuesday, April 21, 2015. The month-long event features the work of more than 60 street artists, representing 11 countries. (Photo by Andre Penner/AP Photo)

A white Bengal tiger cub plays with its mother in a zoo in the Siberian city of Novosibirsk, about 2,800 kilometers (1,750 miles) east of Moscow, Russia, Tuesday, April 21, 2015. Two blue-eyed Bengal tiger cubs were born in March to a couple of white tigers at Novosibirsk zoo. (Photo by Ilnar Salakhiev/AP Photo)

In this undated handout photograph from the “Inside Out Project”, a poster bearing the image of a Pakistani girl whose parents, lawyers say, were killed in a drone strike, lies in a field at an undisclosed location in the northwestern Khyber-Pakhtunkhwa province. A group of artists in Pakistan are hoping to generate “empathy” among US drone operators by placing giant posters of children in the country's troubled tribal regions. (Photo by AFP Photo)