I remember many years ago when I would come to Buffalo, we dreamed of days of black empowerment," Sharpton said. "Now we have to make sure the conduct of our black citizens complements that achievement. We cannot undermine them with the conduct of killing each other, selling drugs to each other and really celebrating a culture of depravity and decadence."
Even the blacks don't like some of the rap music lyrical content.
Back to the issue of a censored song books.
This type of music and others with unnecesary swearing and heavy sexual content are going to be less and less tolorated by the general public. And it doesn't matter if they are 21 and in a bar.
Degrading anyone with bad language and other forms of disrespect are not in style or popular.

Adjust your shows to reflect higher moral standards. You will be more widely accepted and in turn more employed.

It doesn't matter what you or a handful of ignorant customers want. The general public sees no need for it "in public."
I would rather have my crowds respect me for being a decent, caring, nonconfrontational or controversial person than someone that let's anything and everything go on at there shows, because some jerks think it's cute or funny. Without regard for upset feelings or embarrasing or humiliating someone for the sake of "entertainment." If that's the only way you can get work as a KJ then I feel sorry for you and your unsuspecting throngs.
My 2 cents.