Would you say that there are social norms that either currently exist, or existed in the past, that are undesirable? For example, when it was socially normal t

Would you say that there are social norms that either currently exist, or existed in the past, that are undesirable? For example, when it was socially normal to own slaves, would you consider this necessary and desirable? What about say, 30 years ago, when it was the social norm to deride and abuse gay people?