Readers respond to an essay criticizing U.S. Democrats’ failure to resolve the conflict in Gaza. Also: Trump’s Kennedy Center rebrand; blaming immigrants after the Brown shooting.

A single suspect carried out the shooting at Brown University and the killing of an M.I.T. professor, and was later found dead in New Hampshire, authorities said.

© Christopher Capozziello for The New York Times

Nuno F.G. Loureiro, the professor, attended the same physics program in Portugal as the man suspected in his killing.

© Leah Willingham/Associated Press

Officials identified a man from Portugal as the suspect in the deadly shooting at Brown University and the killing of an M.I.T. professor. The police said he died from a self-inflicted gunshot.

© Christopher Capozziello for The New York Times

Bravery and cowardice are both exemplary teachers.

For the students in the Brown University review session, concerns about grades and questions about economic concepts would be forgotten in an instant.

© Christopher Capozziello for The New York Times