Supreme Court will hear two cases seeking to hold social media companies financially responsible for terrorist attacks

The Supreme Court said Monday it will hear two cases seeking to hold social media companies financially responsible for terrorist attacks. Relatives of people killed in terror attacks in France and Turkey had sued Google, Twitter and Facebook, accusing the companies of helping terrorists spread their message and radicalize new recruits.

The court will hear the cases this term, which began Monday, with a decision expected before the court recesses for the summer, usually in late June. The court did not say when it would hear arguments, but the court...