Video: Socialists explain how and why they worked with Muslim Brotherhood against 'common enemies': US, UK, Israel

Via The Blaze, which accurately characterizes the clip as vindication of Glenn Beck for warning that the hard left was working with the Muslim Brotherhood and other Middle East Islamist radicals within the "Arab Spring."

Question: Do these lefties realize that they're being played by the radicals, who will either discard them or destroy them once Islamism takes power?