Black Blocks, White Squares presents fifty-one themed crossword puzzles featuring radical ideas, history, and movements. Ranging from slightly to substantially challenging, they are built around noteworthy quotations, invoke notable thinkers and books, or allude to key words and concepts. Some of the puzzles use wordplay or grid art to illustrate important ideas or events, exploring a range of orientations and activities in contemporary political activism. Leonard Williams has created puzzles for major newspapers and crossword sites that both gratify and enlighten puzzlers. Each one is constructed according to the prevailing standards of American-style crosswords. You won't need a political science degree to solve these grids, but you'll probably learn something new. The book includes solutions as well as "Constructor's Notes" explaining the ideas behind each puzzle. A perfect gift and conversation starter!