My aim is to examine one particular mode of political participation: the urban riot. In the West African context its importance is enhanced by the fact that there exist few, if any, other ways in which the mass of the population can participate in the political process and seek to bring some influence to bear upon governments. For most of the time, in the majority of states in the region, constitutional mechanisms for influencing governments have been largely absent due to the prevailing climate of political authoritarianism. Only in the Gambia have competitive parties operated throughout the last 10 years, although a few other states (Nigeria, Ghana, Burkina Faso, and Senegal) have had this type of democratic system for part of the time. For the rest, single-party or military rule has held sway, and opportunities for influencing, or indeed replacing, governments through the ballot box have been marked by their absence. Authoritarianism has extended not only to opposition parties — or, in the case of the military, any political organisation — but also to autonomous or semi-independent pressure groups, which have in general been fairly weak, even where not banned altogether.