Groups that unite the majority of EP members such as the EPP and S&D, on the contrary, receive a share of engagement that is considerably lower than their share of seats.

A number of factors may lead or contribute to these results, including:
1. smaller groups send to the EP their leaders; larger groups send backbanchers
2. mainstream, nuanced positions attract less engagement on social media than strong or extrame takes
3. bots, and such
Is this a case of vocal minority VS silent majority? Is the very nature of social media giving more visibility to vocal minorities/more radical views? And, fundamentally, is this distorting the perception of what are commonly held opinions by the silent majority?
As a relative newcomer to these questions, I'd welcome thoughts/insights/suggestions on further issues to explore.