This is just the same principle working in two directions at once. This can be seen operating now in the gay rights and same-sex marriage debates.
The first clause of this law can be seen in the recognition of the legitimacy of homosexuality and gay marriage, until only recently phrased in terms of permissiveness and which has now metastasized into one of imperative. Allowing people to act on their sexual "orientation" (itself an imperative word that replaced the more permissive "preference") is fast being replaced by mandating that people acknowledge its legitimacy through gay rights laws now having been passed in city after city.
The second clause can be seen in the increasing restrictions on those who disagree with the progressivist consensus who are not only not allowed to restrict the definition of marriage to what it always meant, but who are now being told by judges who have suddenly discovered that the 14th amendment mandated genderless marriage are now prohibiting states from defining marriage this way.
These twin tendencies, of course, violate the very principle of tolerance (tolerance being a permissive concept) in favor of a coerciveness of the kind that the champions of tolerance once condemned.