ENGELS Nazi Period. 1820 - 1895

[professor rat]

Of course, matters of this kind cannot be accomplished without many a tender national blossom being forcibly broken. But in history nothing is achieved without power and implacable ruthlessness,
(...)
To the sentimental phrases about brotherhood which we are being offered here on behalf of the most counter-revolutionary nations of Europe, we reply that hatred of Russians was and still is the primary revolutionary passion among Germans; that since the revolution hatred of Czechs and Croats has been added, and that only by the most determined use of terror against these Slav peoples can we, jointly with the Poles and Magyars, safeguard the revolution.
(...)
Then there will be a struggle, an "unrelenting life-and-death struggle" against those Slavs who betray the revolution; an annihilating fight and most determined terrorism -- not in the interests of Germany, but in the interests of the revolution!

http://marxwords.blogspot.com/2005_01_01_marxwords_archive.html