About Us

The ISO is building a socialist alternative in a world of poverty, oppression and war. Our organization participates in many different struggles for justice and liberation today, while working toward a future socialist society, free of all exploitation and oppression, and built on the principles of solidarity and democracy.

We are a U.S. organization with branches and members in about 40 cities and connections to other socialists around the world. We organize in the here and now against injustice and for reforms that will benefit the working class and oppressed. These struggles are important in their own right, but they are also building blocks for a movement to achieve a socialist society.

At our meetings and in our publications, we discuss the political issues and movements of today, along with the rich history of past struggles from below and the ideas of the Marxist tradition dedicated to achieving socialism.

Where We Stand

Learn about more about our political principles in Where We Stand.


Interested in deepening your grasp on Marxism? Start here.