In his book 'Conformity', Cass R. Sunstein argues that understanding conformity and dissent is the key to making sense of living in a world of tribalism and polarization. He sheds light on issues such as social media, fake news, authoritarianism, free speech, and immigration. Sunstein shows that while following the crowd may seem like the right thing to do, suppressing one's own instincts can lead to social harm. Dissent, on the other hand, has enormous social benefits in reducing extremism, encouraging critical thinking, and protecting freedom. A well-functioning democracy depends on individuals saying and doing what they think is best.