A trial of a police officer for failing to protect Parkland students raises legal and moral questions.
A Florida jury is currently deliberating whether Scot Peterson, 60, is guilty of 11 counts that include felony child neglect and culpable negligence. He has pleaded not guilty.
Mr Peterson's case has added a legal and moral dimension to a fraught national debate over law enforcement's responsibility to protect students during school shootings, which are a common occurrence in the United States.