Please remind me when ugly people were forbidden to vote, for example. One thing is an (un)conscious bias favorable towards handsome/attractive people, another

Please remind me when ugly people were forbidden to vote, for example. One thing is an (un)conscious bias favorable towards handsome/attractive people, another is a system that historically thought that one group of people was inferior and had less rights. Obviously I'm not justifying this bias, and I think that society has an important role in reinforcing it, so we should try to stop it, especially in the justice system.