ELI5: Explain Like I'm 5

A Fratricide

A fratricide is when one person kills their own brother or sister. Imagine you have a sister or brother that you love very much. But one day, you get very angry or upset with them and you hurt them really badly or even worse, you accidentally kill them. This is called fratricide. It is a very sad and serious thing that should never happen. It is important to always love and respect our siblings and to never hurt them.