On 23 December 1972 , Palme ( then Prime Minister ) made a speech on Swedish national radio where he compared the ongoing U.S. bombings of Hanoi to historical atrocities , namely the bombing of Guernica , the massacres of Oradour-sur-Glane , Babi Yar , Katyn , Lidice and Sharpeville , and the extermination of Jews and other groups at Treblinka . The US government called the comparison a " gross insult " and once again decided to freeze its diplomatic relations with Sweden ( this time the freeze lasted for over a year )
Sharpeville
Sharpeville massacre
Olof Palme