Sexism is prejudice or discrimination based on one's sex or gender. Sexism can affect anyone, but it primarily affects women and girls. It has been linked to stereotypes and gender roles, and may include the belief that one sex or gender is intrinsically superior to another. Extreme sexism may foster sexual harassment, rape, and other forms of sexual violence. Gender discrimination may encompass sexism, and is discrimination toward people based on their gender identity or their gender or sex differences. Gender discrimination is especially defined in terms of workplace inequality. It may arise from social or cultural customs and norms.