People who are the least likely to be listened to or have recourse — women of color, teenagers, unmarried women, women of low socio-economic status, migrant women, women from ethnic minorities, women with HIV — are especially at risk for abuse.
When Childbirth Feels like Assault
Family Resemblance

You can add overweight/obese women to this list too. I have so many stories about my otherwise completely normal pregnancy as a very big/tall, heavy woman.