A CNN host tried Thursday to hold 2016 presidential candidate Ben Carson’s feet to the fire after he suggested that the gay rights movement is not at all analogous to the civil rights movement.

Carson said in a Fox News interview Wednesday that comparisons between the fight for same-sex marriage and the civil rights movement of the 1960s are inaccurate because he doesn’t recall a time when there were “straight only” water fountains, a reference to the era of segregation in the United States.