“Earthmen Bearing Gifts,” Fredric Brown, 1960 – (short short) (Alternate title: “Contact”) Peaceful Martians wait expectantly to offer telepathy and empathy to the younger, more technologically advanced race of humans. But when the humans, oblivious to the Martian civilization, finally reach Mars, they inadvertently destroy them with atomic bomb tests.
Comments: A botched first contact. Regarded by some as an excellent example of sf flash fiction. Read in 12 Great Classics. Online text at Project Gutenberg.
Author: Wikipedia: “Fredric Brown (October 29, 1906 – March 11, 1972) was an American science fiction and mystery writer. He was born in Cincinnati.”