Niall Ferguson's book "The Square and the Tower: Networks and Power, from the Freemasons to Facebook" discusses the resurgence of anti-Semitism, linking it to the involvement of Trump's campaign with the alt-right. The alt-right movement is characterized by its far-right ideologies, and Ferguson argues that these ideas have been amplified in recent years, culminating in a cultural environment where anti-Semitic sentiments have re-emerged more openly and aggressively.

The analysis highlights how social networks, both online and offline, facilitate the spread of these extremist views. Ferguson suggests that the interconnectedness of today's society, driven by social media, has allowed for a revival of historical prejudices, including anti-Semitism, which were previously marginalized. The book examines the consequences of this trend and the implications for political discourse and social cohesion in the modern era.