Some people are just bound and determined to normalize deviancy, and the constant drum beat rationalizing perversion is the most effective tool.
Do you really think that S&M Bondage Parade down Main Street will change people's minds to accept it?
Actually, it's a very good indicator for other sorts of issues. Look at all that has to be attacked and conquered just to allow homosexuals an opportunity to demand that we accept them. Just off the top of my head:
1. Sexual taboos
2. Common-sense public health measures
3. Traditional understandings of marriage
4. The legal definition of marriage
5. Traditional understandings of the family (i.e., male father, female mother, kids)
6. Being put at the head of the line for adoptions
7. The ability of private organizations to choose the qualifications of their leaders (e.g., the BSA)
8. The clear statements of Holy Scripture (whether you agree with them or not)
It's worth noting that these institutions and traditions form part of the bedrock of our society. Their destruction in the name of the gay agenda resonates far beyond the normalization of buggery.