Rich Lowry: President Obama’s Che Moment

President Barack Obama inadvertently found the perfect photo-op for his Cuba visit at a wreath-laying ceremony at the Jose Marti Memorial in Havana.

A news photo at Revolution Square caught Obama standing together with American and Cuban officials, with an enormous mural of the iconic revolutionary Che Guevara looming over his shoulder on the adjacent Ministry of the Interior building.

Che is, of course, ubiquitous on dorm-room walls and T-shirts in the United States, and a hero of the Cuban revolution. He also was a coldblooded killer who set up the Cuban gulag and presided over summary execu...