Secretary of State Marco Rubio told a radio host that a designation is “in the works” to label the Muslim Brotherhood and the Council on American-Islamic Relations as terrorist organizations. To the editor: Contributing writer Josh Hammer’s recent column repeats bigoted, discredited conspiracy theories about American Muslims ( “Label the Muslim Brotherhood’s branches as terrorist organizations,” Aug. 15). Just as extremists once smeared Catholic and Jewish Americans as disloyal and accused Black civil rights leaders and Vietnam War protesters of being communist agents, Islamophobes today falsely claim that American Muslim institutions are part of a global terrorist conspiracy. The main...