Rik Peels wrote a review of Quassim Cassam's work, Extremism: A Philosophical Analysis.

Cassam, Quassim. Extremism: A Philosophical Analysis.
Abingdon: Taylor & Francis, 2021. Pp. 254. $19.96 (paper).

The review is published in the journal Ethics, volume 132, number 4, in July of 2022.