The United States government has revoked the visas of six foreign nationals after officials determined they had made disparaging remarks about the assassination of conservative activist Charlie Kirk. The decision follows a review of their social media activity, with the State Department stating that those who celebrate or make light of such events will be removed from the country. This move is part of a broader effort by the administration to identify and expel foreigners, particularly students, who are believed to have participated in or supported protests against Israel's military actions in Gaza. The administration's actions, which include denying visas and expelling diplomats and artists, have sparked criticism from civil rights groups concerned about potential violations of free speech rights.