In general equating ultra radical organizations like this one with mainstream US fundy Christian ones like Focus on the Family seems deeply misguided to me. The American mainstream fundies bear a lot more resemblance to moderate Islamists like Qardawi or Sistani than they do to the friendly totalitarians of Hizb al Tahrir.  By that I mean that they believe in democracy but one where the 'true' religion plays a major role, particularly in legal norms regarding personal life and morality. Something rather different from the outright rejection of Democracy as an inherently evil ideology because it gives sovreignty to the people rather than to god, or rather his representatives on earth.