Top photos of the day: Thursday, September 11, 2014

From the archives:A man with a fire extinguisher walks through rubble after the collapse of the first World Trade Center Tower on Sept. 11, 2001. The man was shouting as he walked looking for victims who needed assistance. Both towers collapsed after being hit by hijacked passengers planes. | Getty Images

A selection of some of the best photographs from around the world:

U.S. Attorney General Eric Holder (left) and Craig Floyd, Chairman of the National Law Enforcement Officers Memorial Fund, place their hands over their heart during a moment of silence at the National Law Enforcement Memorial on the 13th anniversary of the 9/11 attacks in Washington, DC. 72 law enforcement officers died in the line of duty on September 11, 2001, more than on any other day in American history. | Photo by Win McNamee/Getty Images

President Barack Obama faces towards the Pentagon during an observance ceremony to mark the 13th anniversary of the 9/11 attacks. | AP Photo/Pablo Martinez Monsivais

Demonstrators gather around a ballot box during a Pro-Independence demonstration as part of the celebrations of the National Day of Catalonia in Barcelona, Spain. Thousands of Catalans celebrating the ‘Diada de Catalunya’, are using it as an opportunity to hold demonstrations to demand the right to hold a self-determination referendum next November. | Photo by David Ramos/Getty Images

ARory McIlroy of Northern Ireland hits his approach shot on the eighth hole during the first round of the TOUR Championship by Coca-Cola at the East Lake Golf Club in Atlanta, Georgia. | Photo by Kevin C. Cox/Getty Images

Protesters from PETA (People for the Ethical Treatment of Animals) demonstrate outside Somerset House against the use of rabbit fur in fashion in London, England. The demonstration was held the day before the start of London Fashion Week and called on models, designers and buyers to boycott fur garments. | Photo by Oli Scarff/Getty Images

U.S. Border Patrol agents search for undocumented immigrants in the brush near Falfurrias, Texas. Agents from U.S. Customs and Border Protection patrol the area day and night searching from smugglers bringing both illegal immigrants and drugs into the U.S. | Photo by John Moore/Getty Images

David Henson of Great Britain competes on the way to winning the gold medal in the 200m Men Ambulant IT2 final during day 1 of the Invictus Games, presented by Jaguar Land Rover at Lee Valley Athletics Centre on in London, England. | Photo by Paul Thomas/Getty Images for Jaguar Land Rover

USA’s Kenneth Faried shoots against Lithuania’s Donatas Motiejunas during a 2014 FIBA Basketball World Cup semi-final match at Palau Sant Jordi in Barcelona, Spain. | Photo by David Ramos/Getty Images

Herders dressed in traditional lederhosen handle a cow returning from summer alpine grazing during the annual cattle drive in the Allgaeu region in Bad Hindelang, Germany. Every year cattle herders bring the animals to Bavarian mountain meadows in the spring, where they remain throughout the summer, before bringing them back to farms in the villages below for the winter. The herders spend the summer living in a mountain hut called an Alm, often without electricity in a tradition going back centuries. This year brought an unusually high number of cattle fatalities during the summer, which farmers attribute to poisoning from natural causes. In the last few months there have also been several cases of fatal attacks by cattle against hikers, also an unusual occurrence. | Photo by Philipp Guelland/Getty Images