The trial of eight people in Paris on terrorism charges started on Monday over the beheading of teacher Samuel Paty, who was killed by an Islamic extremist after showing caricatures of Prophet Muhammad to his middle school students for a lesson on freedom of expression.

A month before Mr. Paty was killed, Charlie Hebdo had republished caricatures of the Prophet Muhammad. That led to new terrorist threats against France and a knife attack occurred that month near the satirical newspaper’s offices — making it clear to ...

A trial got underway Monday in Paris of eight people facing a range of charges related to the murder of French schoolteacher Samuel Paty, who was beheaded in an Islamist terror attack outside his school.