To search for books in the Library Catalog select "Advanced Search".
If you don't have a specific title or author in mind, try a keyword search for the political issue you're researching or books about using art for protest, politics or propaganda.
Then from the Search Tools menu limit your search to the format "books".
In results list, click on a book title to find out more about the book. If an e-book use the "View E-book" button to view the book online.