Super delegates were petulant by not following the wishes of their constituents and voting for Sanders.  The DNC was petulant for conspiring with Clinton for press and finances, and voter suppression.  Far more egregious and outrageous actions than Chelsea.  They will have to worry more about their re-elections now.  This is politics.  Chelsea was rightfully angry, and those who are wise would take her display and act positively to reach out to many, many voters who feel exactly the same way...second class citizens in their own democracy, not completely dissimilar from Rosa Parks.