You should look up how the Cambridge Analytica scandal influenced the 2016 presidential election and all the stuff that came up during the congressional hearing

You should look up how the Cambridge Analytica scandal influenced the 2016 presidential election and all the stuff that came up during the congressional hearings. It is highly likely that Trump won because of it. They not only used the leaked facebook data from 70 million americans to build models of who was voting for who, they also used it for targeted ads. For example, they knew that people from certain groups were highly unlikely to ever vote for Trump, no matter how many propaganda ads they were fed. But they didn't let all the personal data they had go to waste. They instead showed these people "news" articles via ads about Clinton and her alleged weakness, or her husband's infidelity. This way they made people who would have otherwise opposed Trump simply not vote at all. The rest is history.