Figure 1

Distribution of tweets and clients’ type per account type. (a) The fraction of tweets with a URL pointing to a website belonging to one of the categories. Normalization is computed per group, meaning that, for example, the fraction of not verified tweets per category sums up to one. In each of the five groups, the order of bars is kept the same. We always display bars in the following orders: fake news, extreme bias right, right, right leaning, center, left-leaning, left, and extreme bias left. See Additional file 1 Table 2 for further details. (b) The fraction of tweets with a URL pointing to a website belonging to one of the categories posted through non official sources. Refer to Additional file 1 Table 3 for a complete view of the percentages