If you say belief is about rightness then I suppose we can tolerate those who, in their logic and faith, believe that homosexuals are a disease-ridden people, who deserve to be hanged.
What is a "fact" by the way?
I am not talking about believing and "accepting" others´ beliefs, but aobut something more fundamental and, if you want, "demolishing": you can only belief in what you feel is right; but that "feeling" is not based on a critical treatment of it: you accept a belief along with a certain set of other beliefs, "tautologies" like I said, that you take for logical reasons to support all the structure of belief; so what I am saying is that a belief, that morals, are vital only as far as we needed just ANY mental support of belief to lead our daily lifes and, being just a fundamental, vital requirement they don´t need to be sophisticated, more or less "right" or "true", only they need to "be" within you. In short, you can not realize your believe is "wrong" until you abstract from it by accepting the challenge to question it by reasoning, and before that your belief, any belief is right: you may see a fault in others´ belief, but it is useless to dispute with someone who can never accept he can be wrong. Take that stupid Mr. Aznar, for example. As long as you are wrapped in self-sufficient principles, be they called pompously "dignity", "God", "justice", as long as you don´t accept to reason over them, you are not a superior being thanks to moral principles, just an animal with a certain training in definite automatisms.
To further clarify my point you would need to read a slightly longer post than usual. So if you consider it worthy, let my try to explain my position in what follows.
Any belief is unassailable because it places itself above and beyond all reasoning. We all have beliefs, because they are implied in any mental action, and by beliefs I mean not just moral and ethical codes, but the most fundamental assumptions like needing to get feeded (think of anorexia); now you may think that this is an open door to all the excesses of the so-called "moral relativism". But as your own beliefs may have already told you, I can assure I´m not as fool and as to try to shake your beliefs to the extent that anything goes as long as one believes it. Your justification is the "belief" in a vague susbtantial morality, unsakable, unassailable, and I am not questioning its "value", as I say, it´s fundamental for reasoning and all we have until we can go further by working mentally over it, but as long as we don´t take that further step, we may be vulnerable to the attacks of all sorts of sophisms, from racial supremacy to the sanctification of marriage and the "natural" foundation of heterosexuality or all their contraries, which amount to the same.
What I am trying to say is that the realm of absolute truths of belief (moral principles and the like) is not the end, it would be meaningless as I have just showed you and that´s the stupid logical mistake someone may appeal to when, having discovered that what he/she had been taught is not an absolute, unshakable truth, surrenders to that moral relativism which may imply any thinkable crime: having been divested of his/her original support of beliefs, and having been given the freedom to establish new ones, he/she literally loses his/her reason because irrespective of their truth, and irrespective of that because we can´t have any absolute truth, reasoning needs some primal stuff because it´s a "resultant" of the directions given by beliefs.
That is the lesson of science, the awful task of thinking and investigating during all of our lives to achieve no certainty. For comforting certainties you have religion, your morals. That´s why a country may stand without science but not without morals and firm beliefs, and that´s why Europe is so sick: they got rid of the old structures of theocratic and aristocratic absolutes, but what they have substituted is an untenable imposture: they have replaced the absolute of God, which is, as I have said, a coherent concept, for the stupidity of the belief in the "certain knowledge" given by Science. I know that US citizens share, as Westerners themselves, that same belief, but check out old threads about "Do you believe in God" and compare the guileless answer of most Americans to the average sneering post of the average Voltairian European. The Europeans freed themselves from the tyranny of one belief to create a tyranny of an element not fitted for that purpose: they discovered the goodness of reasoning and investigation but, not being aware of their true nature, by making them form part of a moral judgement in a place which is not theirs, they put them in the place of the old destroyed a set of certainties because, once again, can´t live without certainties. To a certain extent we can live "without sicence and without art", to the extent to which awareness has not developed as objects, that is, as linguistical awarenesses, as "concepts", but the activity is always there, we investigations and build the judgements that are behind what we call scientific and artistic activities, just like (we suupose, always encountering the limits of our knowledge, our fallibility) animals may breath without "knowing" what breathing "is".
All this is also the point behind all the debate going over the teaching of evolution. Defenders of the evolutionary theory do not defend it as science but as a belief, as a part of Science like what a Prophet is to the God he preaches. And that´s where they are wrong, plain wrong, and not so much against the Christians as agaisnt themselves, agaisnt the science they think they are defending. From all I have said you could well infer that I believe myself that evolution is what defines the course of the universe, human mind included, but those people defend Evolution as a credo, not as a hypothesis that must be worked over in the constant process on mental evolution of humanity. So they end up, unaware, joining the same side of their opponents, that is, postulating an unshakable, undebatable truth and fact: "survival of the fittest animal" (here you might be interested to know about the moral implications darwinism has had in establishing the political and economical system that the XIXth century left to us to extend to its ultimate consequneces... maybe the concept of "social darwinism" will serve to indicate about the implications an apparently innocent, purely technical and restricted concept may work, with its turn of mind and the adequate pragmatical context, far beyond its initial point), and that´s where, for once, the creationists have a good argument against the scientific, "rational" side, namely, that, like any other scientific theory, darwinism is subject to testing and, thus, eventually to being surpassed. The evolutionists may think that having four centuries of sucessful scientific tradition places them above the creationsits, while in fact they degrade science and reduce it to the same "evangelical" simplicity of the others, under a different form and different name.
But, in their turn, the creationists are wrong in making the Bible a source of sicentific investigation. As I said, religion, faith, the sacred scriptures are a source of mental comfort, nothing to do with the everlasting unrest of scientific activity. So that they may be right in appealing to a right to defend certain beliefs and certainties BUT NOT in making them substitute the scientific approach. In fact, their position is the weaker one because, no matter what they choose to teach, the world in which they live was not build just on the shepherd morals and thinking of the Bible, but on those four centuries of scientific activity that help support the complex system that allows them to appeal to "rights", something that a society based exclusively on the Pentateuch would not offer because it couldn´t afford it. In short, science is not "knowledge", that is, "certainty", but rather "investigation". Certainty is to be found in faith, in religion, in morals, in beliefs.
All that is nothing but the belief-reasoning activity I tried to expose before. Reasoning must be based on something, and in that something enter imagination (fancy, even what generations of received sophisticated rationalized knowledge and beliefs may find preposterously stupid) and belief, so that "belief" is always a base of a forward step and, when we must hold the pace and settle on a belief, when we can´t keep "reasoning", we must at least keep the ability to go on again at any time, and not "believe" that the beliefs we already have are the ultimate end of the universe.