There was initially little opposition to the 2001 Afghanistan War in the United States and the United Kingdom, which was seen as a response to the September 11, 2001, terrorist attacks and was supported by a majority of the American public. Most vocal opposition came from pacifist groups and groups promoting a leftist political agenda; in the United States, the group A.N.S.W.E.R. was one of the most visible organizers of anti-war protests, although that group faced considerable controversy over allegations it was a front for the extremist Stalinist Workers World Party. Over time, opposition to the war in Afghanistan has grown more widespread, partly as a result of weariness with the length of the conflict, and partly as a result of a conflating of the conflict with the unpopular war in Iraq.