red hat brigade
Colloquialism for attendees of IndyCar events, identifiable by the red hats they wear, who did not pay for their tickets and who are only attending because Marlboro had sent them free tickets vouchers in the mail; each Marlboro 'guest' gets a red hat when they exchange their voucher for a ticket at the track.
The crowd at that last crapwagon race was pathetic! The track has 100,000 seats but the place was only quarter full of gomers, if that, and most of those were members of the red hat brigade!