Not all slavery ended when the thirteenth amendment was passed. First nation peoples (referred to as indians) continued to be used as slaves after the Emancipation Proclamation. Women still haven’t gotten the equal rights and privileges under the law promised by the 14th Amendment to the Constitution. When the simple straight-forward constitutional amendment was proposed specifying that women should get this equal treatment the requisite number of States failed to ratify it. That denial is the epitome of gender-bias at work. See the photo of the T-shirt below having the simple wording of the Equal Rights Amendment itself printed on it, and then ask yourself: How could anyone oppose that (the E.R.A.) unless they are biased?