Whatever the rights and wrongs of the songs, I always find it curious when someone talks as distainful as you of people needing "professional help".
If you saw one guy running naked on the pitch, you might say he needs professional help. If you hear one guy shouting something unacceptable (and i mean really unacceptable, not something that provokes faux outrage like the word "19th Century Terrorist") then you might say they need professional help.
On the 1st of September you'll probably hear songs like the Billy Boys. Ignoring the rights and wrongs of it, it would be disingenous to say what you'll hear is a minority. It wasn't a "minority" singing last season. So by your logic, half of the people at Ibrox stadium aren't Rangers fans (and I'm being conservative there).
Your position is weak and pathetic in my opinion. It's simply not good enough to expect that if we "get our house in order" then that is enough. I can't and won't be lectured to whilst other supporters have free reign to display banners like they do.