Possible Clues:

• Crowd beginning to build after short time
• 'Nouns of number, or multitude, such as ____, Parliament, Rabble, House of Commons […] and the like' (William Cobbett)
• Master of Ballantrae opens with a group of wise guys
• The Mafia Crowd?
• Torch-wielding group in 'Frankenstein'
• Tony Soprano's group, with 'the'
• "The Godfather" focus
• Torch-wielding group in "Frankenstein"
• Grand Central scene at rush hour, e.g
• Flash ___ (sudden gathering)