Fig. 1: The vaccine conversation is more assortative with respect to sentiment.
From: Debates about vaccines and climate change on social media networks: a study in contrasts

Network of users tweeting 100 times or more in the climate change (top) and vaccine (bottom) conversations, for retweet (left) and mention (right) networks. Each node represents an individual user. Edges represent interactions between the users: a user has tweeted or mentioned another user. The color of the node represents the most common sentiment expressed by that user: green represents pro-, red represents anti- and yellow represents neutral.