24 Of The Most Powerful Photos Of This Week

Warning: Viewers may find several of these images disturbing.

Molly Riley / AP

Leroy Jackson of Flint, Michigan, speaks to media on Capitol Hill after attending the House Oversight and Government Reform Committee hearing to examine the ongoing situation in Flint. Michigan's top environmental regulator says that the state should have required the city of Flint to treat its water for corrosion-causing elements after elevated lead levels were first discovered in the city's water a year ago.

Chinafotopress / Getty Images

An aerial view of snow-covered buildings in Xi'an, China. Heavy snow hit Xi'an, capital of northwest China's Shaanxi province, this past Sunday.

Mohd Samsul Mohd Said / Getty Images

A Malaysian-Chinese woman poses for a photograph in front of the tallest outdoor Chinese lantern replica, standing at a hight of 72-feet, ahead of Lunar New Year of the Monkey celebrations in Kuala Lumpur, Malaysia. According to the Chinese Calendar, the Lunar New Year marks the Year of the Monkey, and is celebrated from the first day of the first month of the lunar year and ends with the Lantern Festival on the Fifteenth day.

Rafael Marchante / Reuters

Members of the Shanxi Folk Dance and Music Troupe perform during a rehearsal before a show at the Orient Museum in Lisbon . The show is part of the Chinese New Year Celebrations program of Orient Museum in Lisbon.

Carl Court / Getty Images

A member of staff poses next to a series of artworks by Andy Warhol at the Ashmolean Museum in Oxford, England. The work forms part of a new exhibition entitled 'Andy Warhol: Works from the Hall Collection'. Featuring over 100 unseen Warhol's, it is due to will run from February 4 to May 15, 2016.

Anadolu Agency / Getty Images

Turkish commandos, who play active role in fighting against terrorist organizations in the eastern provinces, train by camouflaging their weapons and equipment in the extreme cold of Hakkari, Turkey.

Thanassis Stavrakis / AP

Riot policemen try to avoid a petrol bomb thrown by protesters during a 24-hour nationwide general strike in Athens, Greece. Clashes have broken out between Greek police and youths throwing fire bombs and stones, as tens of thousands of people march through central Athens to protest planned pension reforms.

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Halit Onur Sandal / AP

The dead body of a migrant boy lies on the beach near the Aegean town of Ayvacik, Canakkale, Turkey. A boat carrying migrants to Greece hit rocks off the Turkish coast on Saturday and capsized, killing at least 33 people, including five children. Some 75 other migrants were rescued. A Turkish government official said he expects the death toll from the incident to rise as rescue workers try to reach other migrants believed trapped inside the wreckage of the boat.

Darrin Zammit Lupi / Reuters

A migrant girl is covered with a blanket moments after refugees and migrants arrived on a raft to a beach on the the Greek island of Lesbos.

Amer Almohibany / AFP / Getty Images

A rebel fighter, reportedly belonging to the Faylaq al-Rahman brigade, looks up from his hiding spot in the rebel-controlled area of Arbeen, on the outskirts of the Syrian capital, Damascus.

Ariel Schalit / AP

A friend mourns over the grave of Hadar Cohen, an Israeli female border police officer that was killed on Wednesday. Cohen was killed after three Palestinians armed with automatic weapons, explosive devices and knives killed an Israeli security officer and seriously wounded another in Jerusalem before police shot and killed the attackers.

Wakil Kohsar / AFP / Getty Images

An Afghan student at Kardan university in Kabul, looks at an Afghan variation of the "Be Like Bill" Internet meme on her Facebook. The text reads "This is Qodos and Qodos does not pay or receive bribe, he respects the law. Qodos is smart. Be like Qodos." An Afghan iteration of the popular "Be Like Bill" Internet meme has gone viral online, with its Facebook posts extolling good Samaritan deeds resonating widely with the war-torn country's youth.

Jonathan Nackstrand / AFP / Getty Images

A road sign warning against pedestrians focusing on their smartphones is pictured on near the old town in Stockholm, Sweden.

Justin Sullivan / Getty Images

A young supporter wears campaign stickers on her face while democratic presidential candidate Hillary Clinton speaks during a "get out to caucus" event at Washington High School in Cedar Rapids, Iowa.

Brendan Hoffman / Getty Images

Ballots are counted following the Republican party caucus in precinct 317 at Valley Church in West Des Moines, Iowa.

Scott Eisen / Getty Images

Bob Holmes, owner of the Clay Dragon Tattoo shop, tattoos a portrait of Republican presidential candidate Donald Trump on the arm of Seth Bailey at his shop in Seabrook, New Hampshire. Holmes is giving free Donald Trump tattoos to clients at his shop and has already booked over 30 appointments for the next two weeks.

Christopher Jue / Getty Images

Zookeepers at Ueno Zoo in Tokyo, Japan, prepare to wrap a net over a zoo staff member dressed as a zebra during an emergency drill. In the drill simulating the scenario that a zebra escaped, local police and emergency workers practiced evacuating the guests and capturing the zookeepers dressed in zebra costumes.

Darley Shen / Reuters

A monkey trainer touches the head of a sick monkey as it receives treatment in Wuhan, Hubei province, China.

Jorge Saenz / AP

Protected by a mosquito net, Nadia Gonzalez recovers from a bout of dengue fever at a hospital in Luque, Paraguay. Dengue, like the Zika virus, is transmitted by the Aedes aegypti mosquito. Zika was discovered in a Ugandan forest in 1947 and until last year, the virus had never caused serious disease. It has now spread to more than 20 countries.

Andre Penner / AP

A man welcomes blasts of artificial snow as he dances at the Bicho Maluco Beleza street carnival block party in Sao Paulo, Brazil. Brazil's over-the-top Carnival is the highlight of the year for many local residents. Hundreds of thousands of merrymakers are taking to the streets in hundreds of open-air "bloco" parties, leading up to Carnival's official February 5th opening.

Danish Siddiqui / Reuters

Gay rights activists hold on to each other as they watch a news TV channel covering the Supreme Court's decision on gay sex in Mumbai, India. India's top court on Tuesday said it will review a decision over whether to uphold a colonial-era law that criminalizes gay sex in a victory for homosexual rights campaigners, at a time when the nation is navigating a path between tradition and modernity.

Anadolu Agency / Getty Images

The imam, Mustafa Efe, of Aziz Mahmud Hudayi mosque, takes care of a cat inside the mosque in Istanbul, Turkey. The imam has decided to open up his mosque to the stray cats and kittens, so they have a safe place away from the perils of the outdoors. He says that they’ve made themselves quite comfortable on the plush carpets while worshipers pray around them

Marco Secchi / Getty Images

A woman dressed in a carnival costume poses early morning for pictures in front of gondolas in Venice, Italy. The 2016 Carnival of Venice will run from January 23rd to February 9th and includes a program of gala dinners, parades, dances, masked balls and music events.

Ian Forsyth / Getty Images

A man stands on top of a hill as ice particle iridescence is seen in high-level Nacreous clouds in Saltburn-by-the-Sea, England. The rare effect is caused by the diffraction of sunlight in the ice crystals that form the Nacreous clouds at high altitudes.