I hesitate to refer to THE FRANKFURT SCHOOL In the context of Jewish liberalism lest I be accused of anti-Semitism since the school was founded by Jewish intellectuals. Now, however, it has metastasized beyond its original Jewish/Marxist roots and taken hold throughout our society especially in academia, journalism, charitable institutions, departments of government, and in many churches. It no longer has a "Jewish" identity and that's not the point of drawing attention to it.
The avowed purpose in founding the school as part of the University of Frankfurt was to identify and destroy those societal institutions which prevented the communist revolution from succeeding in Germany and the rest of the world after World War I. Hitler's persecution beginning in 1933 caused these Jews to flee Germany and spread their intellectual opposition to capitalism and democracy throughout the world. They found a warm welcome in America and invested places like Harvard and Columbia journalism school, the State Department, Hollywood, the CIA, etc.
David Horowitz,himself of course a Jew, has dedicated himself to the thankless and perhaps hopeless task of rolling back the Frankfurt School and its ideology "while we still have the freedom and power to do so".
An interesting lecture on the subject can be found here:http://www.newtotalitarians.com/PsychicIronCagePartII.html
You forgot to mention the New School For Social Research in New York, also known as the Frankfurt School in Exile back in the day.