Gentlemen, I say to you this discrimination must cease. We are determined to fight this question; we believe the Constitution gives us this right. All of the fifteen amendments made to the Constitution run down in one single line of protecting the rights of the citizens of this country. One after another of those amendments give these rights to citizens; step by step these rights are secured to them. And now we say to you that if you will not obey the Constitution, then the power is given by that Constitution for the enactment of such a law as will have a tendency to enforce the provisions thereof.

Speech on Civil Rights Act (1873)