Conversation so far:
What was Unger's career?
The beginning of Unger's academic career began with the books Knowledge and Politics and Law in Modern Society.
Did he author those books?
published in 1975 and 1976 respectively.
What else did he do in his career ?
Unger worked on his magnum opus, Politics.
Did he run for government?
CANNOTANSWER.

Question: What did Unger do in or with Politics ?
Self-contained rewrite: What did Roberto Mangabeira Unger do in or with Politics ?