I'll never advocate stifling someone's right to free speech. Anyone can say what they like, just as others are free to criticize them for saying it. But do you not feel that the term "homosexual agenda" rings of an epithet? While not very overt, it doesn't seem entirely innocuous to me.
I think it refers to those areas where the homosexual community is demanding things outside their normal rights. They have the right not to be beaten up, for example. But if they are beaten up, they don't get to send their assailant to jail ten times longer than your average heterosexual victim.
They have the right to enjoy any sexual activity they want to in their home, but they don't have the right to educate six graders as to the joys of their particular sexual peccadillos.
They don't have the right not to be called names. They don't have the right not to be fired. They don't have the right to prance naked into St. Patrick's cathedral.
But there are those who insist on demanding these rights by pushing their "homosexual agenda."
The fact is, there is a concerted effort by activist groups to promote homosexuality as "normal", "good" and something to be celebrated.
It's an agenda, and being promoted by homosexual advocacy groups. What the heck should it be called other than a "homosexual agenda" ?