Thanks for all the hints. All are interesting, but only some meet my question: Corpses must line their way (not only by the millions like Mao, a fewer will do also).

E. Hoover - interesting, considering the workings of the CIA in Latin America and elsewhere. Yes, he should be included. But the Grimm Bros. and Casanova? Telling fairy tales or banging one's way through Europe I wouldn't consider dangerous.

Virtual librarians are also welcome (special thanks to Giok for Conan) like Eco's librarian.

I strongly must repudiate Mudgard's remark about my dangerousness.