In the nineteenth century, European attitudes, both among intellectuals and the public, shifted toward widespread support for imperialism, but the tensions between such views and long-standing values sometimes gave this support a tortuous and melancholy character. This was the case with two eminent liberal imperialists, both famous as champions of liberty, Alexis de Tocqueville, and John Stuart Mill. Each rejected the other’s justifications for foreign expansion and described his own country’s policies in terms so negative that they might have served better to justify opposition, testifying that there was a destabilizing tension in the backing both gave to imperial expansion. One occasion on which harsh and direct criticism of empire was voiced was expressed was at the outbreak of the “Opium War” in 1839, a conflict whose complex origins belie the old myth that it was undertaken to stuff the dangerous drug down Indian throats. The chapter ends by examining reasons why this opposition was unable to hold back the imperial juggernaut and notes that a significant number of non-European anti-imperial activists found London and Paris hospitable places for their activities.