Kennedy was concerned with other issues in the early part of his administration, such as the Cold War, Bay of Pigs fiasco, and the situation in Southeast Asia. As articulated by his brother Robert, the administration's early priority was to "keep the president out of this civil rights mess". Civil rights movement participants, mainly those on the front line in the South, viewed Kennedy as lukewarm, especially concerning the Freedom Riders, who organized an integrated public transportation effort in the south, and who were repeatedly met with white mob violence, including by law enforcement officers, both federal and state. Kennedy assigned federal marshals to protect the Freedom Riders rather than using federal troops or uncooperative FBI agents. Robert Kennedy, speaking for the president, urged the Freedom Riders to "get off the buses and leave the matter to peaceful settlement in the courts". Kennedy feared sending federal troops would stir up "hated memories of Reconstruction" after the Civil War among conservative Southern whites.