Possible Clues:

• A new chief is source of much chaos
• As in March, perhaps, causing disorder
• Opposition to government elaborated in a march around Sunday
• The uncertain chairman's lack of control
• Man's chair (anag.)
• A rich man's moved by anti-government argument
• What Guy Fawkes masks symbolize
• An old word, failing to capture a disorder
• Chairman’s upset, advocating disorder
• Chief is involved in poor man's anti-government doctrine