Berlin - A leading German Social Democrat has written a book with an apocalyptic vision of his country sliding into poverty, stupidity and Muslim domination. Thilo Sarrazin, 65, a former Berlin finance minister and current Bundesbank board member, is already under investigation by a public prosecutor for allegedly inciting racial hatred by blaming immigrants for making Germany "dumber" and calling Muslimchildren "underclass citizens." (Snip) "If Turkish migrants, in the third generation, do not speak correct German then an air of hostility grows around them.