"Dear writer,
After careful consideration we decided we won’t be moving forward with your work.
It’s offensive. We won’t say why, or how, or to whom.
We won’t say why we liked it then and do not like it now.
Nor will we say whether it’s your work or you, personally, we find offensive. You can safely assume it’s more or less a mix of both.
Best of luck sorting out this heap of trash we’ve just dumped in your lap.
Yours truly,
Editors"