  Many extreme right groups have had an online presence for some time through
the use of dedicated websites. This has been accompanied by increased activity
in social media platforms in recent years, enabling the dissemination of
extreme right content to a wider audience. In this paper, we present an
analysis of the activity of a selection of such groups on Twitter, using
network representations based on reciprocal follower and interaction
relationships, while also analyzing topics found in their corresponding tweets.
International relationships between certain extreme right groups across
geopolitical boundaries are initially identified. Furthermore, we also discover
stable communities of accounts within local interaction networks, in addition
to associated topics, where the underlying extreme right ideology of these
communities is often identifiable.
