Mao's first meeting

I am reading a new biography called Mao: the Untold Story by Jung Chang and Jon Halliday, which so far is excellent. I found this quite interesting:

The CCP's 1st Congress opened in Shanghai on 23 July 1921, attended by 13 people - all journalists, students or teachers....not one was a worker.

How funny, they were fighting for the workers! Isn't this true of all great revolutionary leaders...elitist to the core.