Cambridge Analytica's role in Trump's election campaign and its implications for Facebook

Explain how Cambridge Analytica (CA) played a role in the recent US presidential election and the UK Brexit referendum. What could have been done better before the 2017 scandal? What could have been done after the scandal broke in 2018? The Cambridge Analytica campaign for Donald Trump, the lack of ethical and social responsibility, and the relationship between technology companies and goodwill. Facebook's ethical and legal challenges since the scandal and its future after the Cambridge Analytica case.