A Photo Says More Than Thousand Words

Not really. Context of that Photo is really important - after all it's just a snap shot in time - a very narrow one at that. One doesn't know what happened prior or after the-click moment. And one doesn't know what and who is beyond the visual frame of that photo.

Even then, this photo says a lot...

From The Men Who Killed Gandhi (via PTI/IE)

I am sure M.K. Gandhi was just saying salam after chatting with Jinnah, but historic events can be described simply by looking at this picture and the description of those events won't be too much off the mark.