"Allende’s election was principally a test of the limits of Chilean independence, but it was also a laboratory experiment in what used to be termed ‘the peaceful road to socialism’. Would oligarchy and empire permit an election result to stand if it went against their interests?"
https://www.lrb.co.uk/the-paper/v24/n13/christopher-hitchens/11-september-1973
"In truth, as we now know in annihilating detail, the principle was not allowed to be tested. Even before Allende had taken the oath of office in 1970, death squads paid for by Henry Kissinger had embarked on a campaign of murder and destabilisation"
https://www.lrb.co.uk/the-paper/v24/n13/christopher-hitchens/11-september-1973