I highly suspect at least the spamming of distorted/vandalized pictures of Merkel is the work of German alt-rights (or, to be accurate, neo-Nazis).
Spamming swastikas, though, this one is a known modus operandi of trolls worldwide.
Spamming swastikas, though, this one is a known modus operandi of trolls worldwide.
This reference is better than a swastika though. http://i.imgur.com/sFwteao.png