You had just said it: they oppose the institute of marriage, which is not only a traditional way of announcing the union of two people (let's for a moment accept the fact that maybe marriage is only a Christian creation), but is also a legal way of exposing it.
Now please tell me how opposing the gay marriage is not in any way a sign of hate towards gay people that bars them from certain legal liberties? You could try to sell this point of view as a "kind" point of view, but your conginitively dissonant ignorance still makes you hate people as a result; even if you are not conscious about it.
Some believe that people who get abortions oppose the "institute" of life (since we don't know when life starts, we can't say it doesn't start before 9 months). Is it possible to oppose a practice one believes is barbaric without hating the person who is practicing it? Of course it is-- if you understand human nature. No one is their behavior-- so, the most logical thing is not to hate a person for a single element of their being. Since we can say that most people are logical, we can say that most people don't hate others on the basis of one element.
You're playing the redefinition card rather than accepting that abortions of one human being are never your own business, and the set of values you have accepted when you had accepted "God" in your life have been created centuries ago when we knew close-to-nothing about medicine.
Now please tell me how opposing the gay marriage is not in any way a sign of hate towards gay people that bars them from certain legal liberties? You could try to sell this point of view as a "kind" point of view, but your conginitively dissonant ignorance still makes you hate people as a result; even if you are not conscious about it.