More than twenty years after its publication, Peter Singer's Ethics into Action continues to inspire new generations of activists through its portrayal of Henry Spira and the animal rights movement. With a new preface from the author, this edition celebrates the continued importance of social movements and provides a path towards furthering changes in our world. Singer, one of the world's most influential living philosophers, reveals how Henry Spira influenced major corporations by simultaneously applying targeted pressures and removing existing obstacles to achieve his ethical goals. As people all over the world continues to struggle for justice, Spira's method of effecting change serves as a proven model for activists fighting across a wide range of causes.