When animal rights activists resort to phony letter-writing campaigns to get their point across, they don’t deserve to be taken seriously. Theo Mattson’s Dec. 8 letter, “Save the Earth at grocery store,” was a great example.

Mattson’s letter also ran in at least 15 other U.S. newspapers this month, and in each case a different activist “signed” it. This is part of an organized campaign by the Farm Animal Reform Movement, a radical animal rights group that sends thousands of phony anti-meat letters like this to newspapers every year.

If you want to express a point of view in public, the least you can do is use your own words. But hundreds of animal-rights letters appearing on opinion pages this year were just carbon copies.

If animal rights groups want widespread exposure for their twisted message, they should buy advertisements like everyone else.