I try to remember here how I liked the books I read (and what books I read in the first place :-))
These books are only those that I really read to a big extent. So I leave out all the books I read half, but then had something better to do or technical books where I looked something up and then went on. And also I neglect Comics :-(
For the books I read in German, I will try to provide the english title.
2003 or earlier
This is a quite entertaining read. Günter Wallraff is a kind of "left activist". His work somewhere undercover and then writes a book about it, mostly during the 70ies. So he once dressed a turkish immigrant in Germany and experienced from the first-person experience how it is like to be a part of this minority and work as a so-called "Gastarbeiter" (that book is called "Ganz Unten".
This time, he worked as a journalist at the "Bild-Zeitung", the prominent german yellow press paper.