The Right to Redefine Marriage?

Guest:

The main argument proposed by those seeking to redefine marriage so that same-sex couples can be legally declared married is that homosexual persons are being unjustly denied a fundamental right. Everyone has a fundamental right to marry — the argument goes — but homosexuals are denied this right.

But this argument simply begs the question; it presupposes a particular — and false — answer to the question: What is marriage? A right to marry does not give people the right to compel everyone else to treat an entirely different kind of relationship they might have as if it were marriage.