It seems preplanned. Move Over Aipac already has an article about it. Notice the date on the article.
http://www.moveoveraipac.org/2011/05/protesters-confront-netanyahu-inside-aipac-gala/
Pffft! So why isn't CODE PINK protesting the Coptic Christians being murdered in Egypt? Americans are on to their double standard. Their stunts aren't playing well with Americans!