The passage discusses an unlikely alliance between capitalists and unemployed workers during economic downturns. In such periods, capitalists tend to focus on reducing costs rather than exploring market opportunities, while unemployed workers, united by their similar conditions and anxieties, find it easier to organize. This alliance allows capitalists to use the political organization of the distressed workers to influence the political agenda to their advantage.
Evaluating the given options:
Therefore, the best summary is: "In an economic downturn, the capitalists use the anxieties of the unemployed and their political organisation to set the political agenda to suit their economic interests."