Well, as it turns out, Amnesty International did not have permission to use Iggy's image and the message was created without his consent. Still, it seems Iggy was pretty reasonable about the whole incident and simply asked for Amnesty International to issue an apology. Once they did, Iggy put up a tweet about the message.
Most of you have seen the image that had been circulating since last week. Here is more about it: http://t.co/WDGhajjsrE– Iggy Pop (@IggyPop) June 24, 2014