Second, there are structural theories, most importantly Keynesian, but also including those who point to the breakdown of international trade, and Institutional economists who point to underconsumption and overinvestment (economic bubble), malfeasance by bankers and industrialists, or incompetence by government officials. The consensus viewpoint is that there was a large-scale loss of confidence that led to a sudden reduction in consumption and investment spending. Once panic and deflation set in, many people believed they could make more money by keeping clear of the markets as prices dropped lower and a given amount of money bought ever more goods, exacerbating the drop in demand. Lastly, there are various heterodox theories that downplay or reject the explanations of the Keynesian and monetarists. For example, some new classical macroeconomists have argued that various labor market policies imposed at the start caused the length and severity of the Great Depression. The Austrian school of economics focuses on the macroeconomic effects of money supply, and how central banking decisions can lead to overinvestment (economic bubble). The Marxist critique of political economy emphasizes the tendency of capitalism to create unbalanced accumulations of wealth, leading to overaccumulations of capital and a repeating cycle of devaluations through economic crises. Marx saw