I see some of the same logic in the letter posted by Keith as I see in some of the arguments here. Why are they so enraged about same-sex issues, but not concerned about fornication, adultery, etc., etc.?
Aside from that being a somewhat subjective perspective, depending on who is making the argument, and about whom they are speaking (the nebulous and undefined "they are doing......") the fact that someone doesn't seem to treat other sin "equally" doesn't justify the homosexual behavior. If you follow that line of reasoning out to its logical conclusion, then the American Baptist College should also invite an adulterer, a fornicator, and perhaps even a prostitute to speak at their lecture series. I'd say the reason that acceptance of homosexual behavior is creeping into the church, and becoming accepted and not considered from a Biblical perspective is because the church has been soft on adultery, divorce, fornication, and gluttony.
Prophets, from an Old Testament perspective, had the job of calling Israel back to repentance when it drifted into idolatry and sin, and when they continually refused, to speak about God's judgement. They were rarely, if ever, celebrated, lifted to prominence or invited to the latest back patting conference of prominent religious leaders. They weren't trendy, nor were they up on the latest academic fad from seminary. They had the spiritual gifts of discernment and interpretation. Dwight McKissic's blog post is the prophetic voice here.
https://dwightmckissic.wordpress.com/20 ... onvention/