Why is the photo of jones aaronson and rutherford important?

The picture is important because it proves that the Party was lying about something. This would be a huge deal if people knew about it. These three men had been put on trial and forced to confess to various crimes. But this picture shows that their confession could not have been true. It shows that they were in New York on a day that they swore they were off in Eurasia plotting against Oceania.