Is there an easy way to help someone understand they are being emotionally abusive?

If you told a "normal" person they were being emotionally abusive, you'd think they'd back off and re-evaluate their behavior. After all, people who care about you don't want to hurt you. At least, that's the hope. Is there an easy way to convey to them that their hurtful words and actions are destroying the relationship so that they'll "get it" and treat you nicer?