"Then, in the Spring of 1971, US military officials gave the order to round up all of the pet dogs on the island and have them killed. About 1,000 pet dogs were taken – some straight from screaming children – and gassed with exhaust fumes from American military vehicles. The Chagossians were told that if they didn’t comply, the same would be done to them."

http://www.counterpunch.org/2014/09/18/the-story-of-the-chag...