The Constitution....that's cute....you think they refer to the Constitution...how quaint...
I feel your pain. However, they did refer to it:
“This referendum is a direct attack on racial preferences, and racial preferences are not unconstitutional and do not per se violate the rights of whites...”
Of course, liberals only refer to the parts of the Constitution that they like, like the parts about abortion. (I've read the document a thousand times--I still can't find the Constitutional right to abortion so often cited. I must be blind.) The part about citizens bearing arms, they don't like much. Now that the Supreme Court has made these patently anti-Constitutional rulings on affirmative action, the left will be citing their Constitutional rights to special treatment for privileged gruops, ad nauseum.