Ronald Dworkin argues that in exchange for toleration, minorities must bear with the criticisms and insults which are part of the freedom of speech in an otherwise tolerant society. Dworkin has also questioned whether the United States is a "tolerant secular" nation, or is re-characterizing itself as a "tolerant religious" nation, based on the increasing re-introduction of religious themes into conservative politics. Dworkin concludes that "the tolerant secular model is preferable, although he invited people to use the concept of personal responsibility to argue in favor of the tolerant religious model."