Establishment of first socialist state, one the most progressive states in history and truly ahead of its times, inspiring countless people and revolutions across the globe

The self-immolation of Thich Quang Duc never fails to amaze me. It's just unreal.

And Antonio Turok's photograph of the 1991 total eclipse of the sun in Chiapas, Mexico. This one because even when I know what an eclipse is and how does it happen, there's a moment in my head when I think "What if it never ends? What if everything stays like this forever?" I see that instant of terror in this photo.

Positive - Jack Churchill storming with his comrades wielding a sword: https://warfarehistorynetwork.com/wp-content/uploads/2019/01/MAD-Jack-FEATURED.jpg

Negative - The aftermath of the 9/11 attacks in a landscape view

The "Pale Blue Dot" image of earth taken by Voyager 1. Carl Sagan pushed to have Voyager take a parting shot before they turned off the camera. The earth is about one pixel in size.

Margaret Hamilton standing next to listings of the software that she and her MIT team produced for the Apollo Project.

Called "Earthrise", taken during the Apollo 8 mission in December 1968. Always tried to imagine what it was like to have had that view IRL.

This is the hubble Deep Field and is part of a series of deep field images. It was taken by directing the hubble telescope on a tiny dark spot of space. Every single light in this image is a galaxy, many of them as large or larger than our own. It truly shows the immensity of our universe and shows how insignifcant all our problems really are in the grand scheme of things.

Malcolm X holding an M2, looking cool as hell

Bad trigger discipline though

6-year old Ruby Bridges walking to school.

This picture was always so powerful to me. I think I had that one famous illustrated storybook about Ruby Bridges.

OP’s photo is my favorite, so I will have to mention my second favorite (though calling it a “favorite” feels off).

This photo was taken in 2003 in Iraq. This man is comforting his son. They are being held in an American camp. IIRC to this day we don’t know what happened to these two.

I think if I had to explain the last 25 years to a time-traveler, this would be the one photo I would choose.

This one always makes me melancholic:

Such a big turning point in time, captured on a photograph.

Great post and I really enjoyed the replies. Mine is of Chavez visiting Castro in 2006 in Havanna, as Castro was dying of cancer. Both men were imprisoned for a failed coup but later rose to power (Chavez democratically and Castro by revolutionary liberation of the country), and both men died in a hospital bed in their respective countries in 2013.

Because it's a nice innocent photo of a man walking with nobody on his left side.

Deepwater Horizon sinking in the Gulf of Mexico on April 22, 2010.

It caused an equivalent oil spill of 4.9 million barrels and exposed the surrounding wildlife to toxic materials, covering thousands of animals in oil. The cleanup efforts took years.

A prime example of humans messing up this planet for their own gains.

Yury Gagarin and Gina Lollobrigida. First man into space and one of the most famous actresses back then.

This one really affected me. It's one of the first images from the surface of Mars. I was quite young, and it clicked in me that other planets actually exists and are out there in space.

The terror of war.

Nobody wins in war, and I hate how angry this photo makes me feel.

The first photo of a black hole is the most historically significant "first photo of x" that happened in my life time and that I actually understood its historical significance when it came out. So I'd say that's probably my favourite.

this portrait of Frederick Douglass—an escaped slave who had become a lauded speaker, writer, and abolitionist agitator—is a striking exception. Northeastern Ohio was a center of abolitionism prior to the Civil War, and Douglass knew that this picture, one of an astonishing number that he commissioned or posed for, would be seen by ardent supporters of his campaign to end slavery. Douglass was an intelligent manager of his public image and likely guided Miller in projecting his intensity and sheer force of character. As a result, this portrait demonstrates that Douglass truly appeared “majestic in his wrath,” as the nineteenth-century feminist Elizabeth Cady Stanton observed.

https://www.artic.edu/artworks/145681/frederick-douglass

The Socialist Fraternal Kiss

https://en.wikipedia.org/wiki/The_Boy_Standing_by_the_Crematory

This one. The cost of any war summarized in one picture.

It is hard to pick one, but this photo has always stuck with me. That is a picture from the Dust Bowl during the Great Depression.