Possible Clues:

• Cause of a rowdy scene
• Crowd of protesters
• Pitchfork-wielding assemblage
• Idol group
• Target of the feds
• Pitchfork wielders in "Frankenstein"
• Unruly, sometimes violent crowd
• Group carrying torches and pitchforks
• Descend upon en masse
• Surround, as fans might an idol