The year 2017, which marked the 60th year since the Federation of Malaya emerged from colonial rule to become a new nation, was a compelling moment to reflect on important social, economic, cultural, and political developments and changes that had taken place. Sonic changes were realized more or less as planned, while others were unforeseen. Some fulfilled hopes, but others scuttled expectations. Many brought lasting outcomes but many more only transitory impacts. This chapter serves as the introduction to a volume of articles that views Malaysia's multidimensional social transformation through lenses of "divides and dissent" to appraise key moments, incidents and expressions of contention, and trends of conflict that have shaped society and politics. The areas and issues covered by this exercise of critical reflection are ethnicity and class, political economy, federal-state relations, Islamism and Islamist practices, law and the judiciary, women's participation in politics, art and pedagogy, and the emergence of new streams of sociopolitical dissent.