Stop Islamization of America (SIOA), also known as the American Freedom Defense Initiative,[1] is an anti-Muslim,[2][3][4][5][6][7] pro-Israel[8][9][10] American organization known primarily for its controversial, Islamophobic advertising campaigns.[11] The group has been described as extremist and far-right.[12][13] The Southern Poverty Law Center (SPLC) lists SIOA as an anti-Muslim hate group.[9][10][14]