It requires little imagination to identify the similarities between current events and this description offered by Gordon Allport in the preface to his seminal 1954 text, The Nature of Prejudice. In the same opening pages, Allport also expresses his optimism that psychological science will ultimately be able to shed light not only on matters of ‘material progress’ but also on issues of human nature and social relationships that might help understand the factors that are responsible for both hatred and tolerance (p. xiv). Yet at the same time as arguing that this scientific study of social relations should be possible, he states that it ‘required years of labor and billions of dollars to gain the secret of the atom. It will take a still greater investment to gain the secrets of man’s irrational nature’ (p. xv). And, as a final reflection, he notes that it ‘is easier, someone has said, to smash an atom than a prejudice’ (p. xv).

There is no doubt that the issue of prejudice has consumed many minds and research budgets in the intervening five decades since Allport expressed these views. But what progress has been made? What are the obstacles to progress? And are we yet at a point of knowing how to ‘smash a prejudice’? More significantly, perhaps, we might ask whether Allport’s goal was realistic and whether it ever will be.