Supporters of Bolsonaro had created a video warning that his main rival, Fernando Haddad, wanted to turn all the children of Brazil into homosexuals, and that he had developed a cunning technique to do it. The video showed a baby sucking a bottle, only there was something peculiar about itthe teat of the bottle had been painted to look like a penis. This, the story that circulated said, is what Haddad will distribute to every kindergarten in Brazil. This became one of the most-shared news stories in the entire election. People in the favelas explained indignantly that they couldnt possibly vote for somebody who wanted to get babies to suck these penis-teats, and so they would have to vote for Bolsonaro instead. On these algorithm-pumped absurdities, the fate of the whole country turned. When Bolsonaro unexpectedly won the presidency, his supporters chanted Facebook! Facebook! Facebook! They knew what the algorithms had done for them.

Stolen Focus by Johann Hari