1) The picture has nothing to do with the story which is linked to here...
2) Just shaking a mans hand does not make a man a traitor, do you know the circumstances surrounding the photo? Things taken out of context can be stumbling blocks.
3) The article which you linked to, while odious, is not confirmed. Did you read the article in Yediot Tel Aviv? The article which you linked to did not provide a link to the original article.
4) Is it proper to spread this kind of stuff right after Rosh Hashanah during the Days of Awe?