In over 30 years, Reuters and its award-winning photographers have seen a lot: wars and natural disasters, elections and scandals, protests, and peace treaties.
And the Reuters' photographers have been there to capture it all.
We compiled some of the best and most important photos to date, and many of them show the full scope of both human emotion as well as key international events.
To celebrate World Photo Day, here are some of the most important photographs ever taken.
Editor's note: Many of the images in this slideshow depict graphic violence, injury, and nudity, and many are upsetting.
(All captions by REUTERS. Christian Storm originally contributed to an earlier version of this slideshow.)
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Sgt. William Olas Bee, a US Marine from the 24th Marine Expeditionary Unit, has a close call after Taliban fighters opened fire near Garmser in Helmand Province of Afghanistan in May of 2008.
Petrol sprays on the Formula One racing car of Netherland's Jas Verstappen seconds before the car and the crew of Benetton Ford caught on fire during refueling at the German F-1 Grand Prix in Hockenheim in 1994.
A Russian police officer carries a released baby from a school seized by heavily armed masked men and women in the town of Beslan in the province of North Ossetia near Chechnya in 2004.
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