I've gone and nuked the edits for the Chile and Tibet tags. (Although I did leave in the picture references for Chile)
I had problems with them for almost exactly the reasons Avner listed, although I'm not sure I'd put it quite that mildly.
Neither was doing much of the main job of a tag description, which is to help users decide when a question is on-topic for that tag. In addition, I just have this thing about verbatim copying of website contents. I won't use the fancy P-word. If you don't say you got the contents elsewhere, the natural assumption is that you wrote it yourself. So if you didn't write it yourself you are lying.
Morality aside, if we really want to say verbatim "what Wikipedia said", we'd better serve our users to just link to Wikipedia in the tag wiki, so that they can go read the latest polished contents, not some random snapshot of it.
Now, all this being said, my personal philosophy on tag wiki edits on empty tag wikis is to be very generous. Something is almost always better than nothing (even a wrong something can be a good start and a spur for improvement). So I can see where stuff like this might slip through.
The best defense against it IMHO is to write a tag wiki yourself.