Does one single picture have the power to evoke a message?

When thinking about this I automatically want to say yes because a picture is worth a thousand words; and I truly believe that. From a picture, any picture, you get a sense of emotion from the person, a mood or tone even if it's unintentional and causes the viewer to think. I believe many pictures that evoke a message and make people think usually are depressing, they have to do with war, poverty, death, racism, and sexism... yet maybe why they convey a message is because it's an image of something we don't want to believe. A powerful image I can think of that evokes a message has to be the one of the three fire fighters on 9/11 raising up the American flag. Not only does it show hope it unified America, into believing we can make it through tough times. The picture captured an image of the World changing; during that moment I'm sure national security became stricter, more laws were enforced, besides the fact that people were scared of flying. But the picture more importantly, shows a stark contrast of hope and destruction. Not only do you think of the poor people who died, but the families that were affected. Sadly as I said; it was a terrorist attack on our land but this picture captures the beauty of America and that fact that we will move on.