Anniversary

An Iranian soldier walks past a portrait of the Ayatollah Khomeini outside Khomeini's shrine on the 25th anniversary of his death on June 4, 2014 on the outskirts of Tehran, Iran. Thousands of people gathered to hear speeches to mark the event. Khomeini, the founder of the Islamic Republic, is still revered by many Iranians, and his portrait hangs throughout the country.

John Moore/Getty Images

An Iranian soldier walks past a portrait of the Ayatollah Khomeini outside Khomeini’s shrine on the 25th anniversary of his death on Wednesday on the outskirts of Tehran, Iran

Young participants hold candles as they join tens of thousands of people attending a candlelight vigil at Victoria Park in Hong Kong Wednesday June 4, 2014 to mark the 25th anniversary of the June 4th Chinese military crackdown on the pro-democracy movement in Beijing.

Kin Cheung/AP

Young participants hold candles as they join tens of thousands of people attending a candlelight vigil at Victoria Park in Hong Kong on Wednesday to mark the 25th anniversary of the June 4th Chinese military crackdown on the pro-democracy movement in Beijing

Tiananmem Square Anniversary...BEIJING, CHINA - JUNE 03:  Chinese Paramilitary police stand guard near Tiananmen Square on June 4, 2014 in Beijing, China. Twenty-five years ago on June 4, 1989 Chinese troops cracked down on pro-democracy protesters and in the clashes that followed scores were killed and injured.

Kevin Frayer/Getty Images

Chinese paramilitary police stand guard near Tiananmen Square on Wednesday in Beijing. Twenty-five years ago on this day Chinese troops cracked down on pro-democracy protesters and in the clashes that followed scores were killed and injured.

French teenagers who are part of a WWII reenactment group relax on the promenade of Arromanche next to 'Gold Beach' as preparations for the 70th Anniversary Of D-Day are finalised on June 2, 2014 in Bayeux, France. Friday 6th June is the 70th anniversary of the D-Day landings which saw 156,000 troops from the allied countries including the United Kingdom and the United States join forces to launch an audacious attack on the beaches of Normandy,  these assaults are credited with the eventual defeat of Nazi Germany. A series of events commemorating the 70th anniversary are planned for the week with many heads of state travelling to the famous beaches to pay their respects to those who lost their lives.

Christopher Furlong/Getty Images

French teenagers, who are part of a second world war re-enactment group, relax on the promenade of Arromanche next to Gold beach, as preparations for the 70th anniversary of D-day are finalised on Monday in Bayeux, France

Garment workers protest in Bangladesh...epa04163076 Garment workers make a human chain demanding proper compensation of the dead and injured workers of the Rana Plaza building collapse, in Dhaka, Bangladesh, 11 April 2014. The one-year anniversary of the collapse of the eight-story Rana Plaza building that left over 1,100 workers dead and about 2,500 rescued alive is coming up on 24 April 2013.  EPA/ABIR ABDULLAH

Abir Abdyllah/EPA

Garment workers in Dhaka, Bangladesh, gathered to demand compensation for those who were killed and injured in the collapse of the eight-storey Rana Plaza building last year. Protestors formed a human chain in the run-up to April 24, the first anniversary of the tragedy, which saw 2,500 people rescued but left more than 1,100 people dead.

Performers re-enacting some of the events enter a public ceremony to mark the 20th anniversary of the Rwandan genocide, at Amahoro stadium in Kigali, Rwanda Monday, April 7, 2014. Sorrowful wails and uncontrollable sobs resounded Monday as thousands of Rwandans packed the country's main sports stadium to mark the 20th anniversary of the beginning of a devastating 100-day genocide.

Ben Curtis/AP

Performers mark the 20th anniversary of Rwanda’s genocide at a ceremony in Amahoro stadium, Kigali, Rwanda.

Police officers bow to offer prayers in silence for the victims in Namie, near the striken TEPCO Fukushima Dai-ichi nuclear plant in Fukushima prefecture on March 10, 2014, one day before the third anniversary of March 11 massive earthquake and tsunami.  The 9.0 magnitude earthquake in 2011 sent a huge wall of water into the coast of the Tohoku region, splintering whole communities, ruining swathes of prime farmland and killing nearly 19,000 people.

Yoshikazu Tsuno/AFP

Police officers offer prayers for victims in Namie, near the stricken Fukushima Daiichi nuclear plant, on Monday, one day before the third anniversary of March 11 earthquake and tsunami. The 9.0 magnitude earthquake in 2011 sent a huge wall of water on to the coast of the Tohoku region, splintering whole communities, ruining swaths of prime farmland and killing nearly 19,000 people.

Venezuelans Loyal To Former President Hugo Chavez Prepare To Mark One Year Anniversary Of His Death...CARACAS, VENEZUELA - MARCH 04:  A worker passes a mural of Hugo Chavez at the military barracks where the former Venezuelan president is entombed on March 4, 2014 in Caracas, Venezuela. Workers made last minute preparations for Wednesday's ceremony marking the first anniversary of Chavez' death on March 5, 2013. The anniversary has been marred by three weeks protests against the government of Chavez' chosen successor Nicolas Maduro. (Photo by John Moore/Getty Images)

John Moore/Getty

A worker passes a mural of Hugo Chavez at the military barracks where the former Venezuelan president is entombed in Caracas, Venezuela. Workers made last-minute preparations for Wednesday’s ceremony marking the first anniversary of Chavez’s death. The anniversary has been marred by three weeks of protests against the government of Chavez’s chosen successor, Nicolas Maduro.

Chadians attend on February 21, 2014 a ceremony marking the 50th anniversary of the Zakouma National Park, Chad's oldest natural park, led by the Chadian President during which a thousand kilogrammes of elephant tusks will be incinerated.

Marco Longari/AFP

Chadians attend a ceremony marking the 50th anniversary of the Zakouma National Park, Chad’s oldest natural park, led by the Chadian president, during which 1,000 kilos of elephant tusks are incinerated

Health workers from different states attend a function to celebrate the third year after India was declared polio free in New Delhi, India, Tuesday, Feb. 11, 2014.

Saurabh Das/AP

Health workers from different states attend a function in New Delhi, India, to celebrate three years since India was declared polio free