This threat contains the best hard evidence that I've seen (quoted below).
SUMMARY: The newsletter bashed Dr. King & the MLK holiday -
Ron Paul voted for the MLK holiday in Congress.
http://www.ronpaulforums.com/showthread.php?t=88510
One of Kirchick's excerpts from the "Ron Paul Political Report" newsletter bashes the MLK Holiday saying: "Are we supposed to honor this 'Christian minister' and lying socialist satyr with a holiday that puts him on par with George Washington?" See this newsletter excerpt here:
http://www.tnr.com/downloads/december1990.pdf
How odd then, that PolitiFact.com chooses to criticize Ron Paul in this manner: "An examination of Paul’s record shows that although he usually adheres to his principle, he has sometimes voted for programs that aren’t “expressly authorized” in the Constitution. For example, in the late 1970s and early 1980s, he voted to authorize the continuing operation of NASA and to celebrate Martin Luther King Jr.’s birthday on the third Monday in January."
It's too bad our mysterious ghostwriter didn't know that Ron Paul had voted for a holiday for the "lying socialist satyr" ostensibly breaking with his own Constitutional principles to do so!!!!