Thilo Sarrazin
![Sarrazin in 2009](https://upload.wikimedia.org/wikipedia/commons/9/92/Thilo_Sarrazin030709_cropped.jpg)
He became well known after publishing a controversial book about Muslim immigrants in Germany in 2010. In his book ''Deutschland schafft sich ab'' (''Germany Abolishes Itself''), he denounces what he sees as the failure of Germany's post-war immigration policy, sparking a nationwide controversy about the costs and benefits of multiculturalism. As a result, he is no longer a member of the SPD as of 31 July 2020. Provided by Wikipedia
1