One of your responsibilities as a photographer is to ensure that your photo "reads" well. That means no distracting elements in the background. If you're working for a corporate client, you want your client's logo in the background where it won't be cropped out, but not so much that it looks too commercial.
Maybe it's just me, but I wouldn't have wanted this background to have to work with for all the tea in China. I ran across it over at The Wonkette, and did a fair amount of research to try to find the source/date and so on, with no luck. Feel free to share what you know about the details of this event in the comments.
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