  For many, social networks have become the primary source of news, although
the correctness of the provided information and its trustworthiness are often
unclear. The investigations of the 2016 US presidential elections have brought
the existence of external campaigns to light aiming at affecting the general
political public opinion. In this paper, we investigate whether a similar
influence on political elections can be observed in Europe as well. To this
end, we use the past German federal election as an indicator and inspect the
propaganda on Twitter, based on data from a period of 268 days. We find that 79
trolls from the US campaign have also acted upon the German federal election
spreading right-wing views. Moreover, we develop a detector for finding
automated behavior that enables us to identify 2,414 previously unknown bots.
