Black teenager, Ralph Yarl, was shot and seriously wounded for ringing the wrong doorbell

Based on the information you provided, it seems that a black teenager named Ralph Yarl was shot and seriously wounded for ringing the wrong doorbell by a white attacker who was subsequently released without charge. It is a tragic incident that highlights the ongoing issue of racial injustice and violence in many parts of the world. It is important for society to work towards addressing these issues and ensuring justice and equality for all individuals regardless of their race, ethnicity, or any other characteristic.