On December 7, 1941 - that is, 75 years ago-  Japanese torpedoes attacked by surprise the US military base in Pearl Harbor, Hawai. “Tora, tora, tora! (Tiger, tiger, tiger), Japanese soldiers ordered in the radio.

The Japanese attack provoked the involvement of the US in the Second World War, leading to disastrous events like the atomic bombs over Hiroshima and the killings of thousands of prisoners under general Tojo.

Coinciding with the 75th anniversary of the Pearl Harbor attack, Spain newspaper El Mundo runs a story about a less known aspect of this time of history: the concentration camps created by the US to jail American citizens of Japanese descendant during the war.

 Citizens like Bill Shishima,  who was 11 year old when he was sent from his home in L.A to a concentration camp in Heart Mountain, Wyoming. Or Roy Sakamoto, whose father and brothers were sent to Tule Lake camp, in California.

More than 120,000 people of Japanese origin were jailed in the US during the Second World War, as reported in El Mundo today.