Being a group theorist can be dangerous!

The Maoist movement decided that group theory was a reactionary subject of the old regime, and started protesting at the increasing number of professors in the subject being appointed. Demonstrations erupted outside of the maths department with protesters holding placards demanding ‘No more group theory’. One new appointee in group theory was frightened off and took a job elsewhere. During one demonstration, the students scaled the outside of the building and scrawled `Group Theory Department’ on the wall.

This paragraph is taken from the non-fiction book Finding Moonshine by Marcus du Sautoy. These events took place in Germany in the early 70’s.