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, one of which is picture from Georgia.
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.