4. Amber Portwood (Teen Mom, MTV, 2009-Present)

Amber is probably the most well known of the Teen Mom crowd, though it's not exactly in a positive way. Not only is she often verbally and physically abusive towards her baby's daddy, but she does so when her child is in the room.

People who end up involved in domestic abuse when they're older more often than not grew up in an environment where it existed. By subjecting her child, no matter how young, to her fits of rage, Amber is both teaching him the completely wrong lessons about conflict resolution and emotionally scarring the little man. Add that to the fact that this is all portrayed on a reality show, and we're left wondering if perhaps her continued presence on Teen Mom crosses the line between entertainment and decency. Answer: Yes, it does.