1. A pejorative term for someone who advocates for, supports, performs, or has had an abortion. Primarily heard in US, South Africa. The mob gathered around the clinic, shouting "Baby killers!" at anyone entering or leaving the building.

2. A pejorative term for a soldier returning from war, used by those who oppose said war. Although the phrase was commonly applied to US soldiers returning from the Vietnam War, it has since fallen out of favor. Primarily heard in US, South Africa. She called me a baby killer as I stepped off the plane, which really hurt because I had been enlisted and didn't want to go to war.