Nationalism is what gives nation-states their power. It’s like a belief created by all members of the nation. It surrounds us and penetrates us. It binds the nation together. It has a light side, which inspires and liberates. It has a dark side, which oppresses and destroys. In this week’s episode of “The History of Singapore”, PJ Thum heads to a long time ago in a country far, far away to illustrate nationalism, its significance to decolonisation, how nationalism and decolonisation are double-edged swords which have defined Singapore and Malaysia, and why the price of freedom is eternal vigilance against tyranny. Please send questions, comments, and feedback to [email protected] or visit thehistoryofsingapore.com.