The major post - World War II changes in ideologies

Liberals and Conservatives for first time accepted governmental obligation to intervine in economy for social benefits in order to help reduce extremes of poverty and wealth. On the other hand, socialist for the first time accapted market economy rather than full socialization and welfare state. Emergence of issues which cut across quality of life including; environment, rather than social issues such as abortion; drugs (distributive issues).
The recession of the 1980 lead to less government control and less regulations. These ideas in United States were known as neo-Conservatism, and in Europe neo-Liberal. They caused reduction in welfare state, reduction in power of union. Institutions once owned by government now were privatized. After collapse of Communism in Soviet Union and Eastern Europe in 1989, parties in those countries either dissolved or "reformed. Ideas of "new Democrats" in US or "new Center" in Europe supported the new role of government, to target specific group in need or specific issues and problems rather than to have government programs covering everyone.