I've been saying it since March. Most of the so-called "pro-choice" students I've spoken with agree.
Two African-American students from the University of Georgia at Athens (March 2009) were the first to agree with my premise. They did so emphatically, dismissing any parallel between the plight of African-Americans in the U.S. during the 19th century.
The last two University of California - San Diego (UCSD) students that I spoke with on the final Exhibit day of our spring tour (Paul and Chris) agreed without the slightest hesitation.
In the first Mason-Dixon line, black slaves who could escape across state boundary lines separating slave states (in the south) from free states (to the north) ceased to be property--they were considered persons protected by state and federal law.
Once again America has drawn a line that divides people into two classes. Once again America has drawn a geographic boundary that separates those considered to be mere property from those considered to be persons protected by law.
The birth canal has become the new Mason-Dixon line in America.