Although some of the conflicts between the SS and SA were based on personal rivalries of leaders, the mass of members had key socio-economic differences and related conflicts. SS members generally came from the middle class, while the SA had its base among the unemployed and working class. Politically speaking, the SA was more radical than the SS, with its leaders arguing the Nazi revolution had not ended when Hitler achieved power, but rather needed to implement socialism in Germany (see Strasserism).