British political journalist Sami Hamdi was detained at San Francisco International Airport and has had his visa revoked by the Department of Homeland Security, which claims he poses a national security threat. His arrest comes after he spoke at a CAIR event and is part of a broader trend of deportations affecting Palestinians and anti-Zionist activists. CAIR condemned his detention as an affront to free speech, while Hamdi's family and supporters argue that he is being unfairly targeted for his political views.