Roland Boer's Socialism in Power is critically necessary for anyone wanting to understand the evolution and development of socialist democracy. An example of the weakening of functional democracy under Khrushchev in particular include a requirement of constant turnover in communist party membership over and above what would naturally be recalled by the working classes, resulting in an erosion of discipline in the communist party. This was a consequence of Khrushchev's line that class struggle was over in the USSR.