• Black Friday sales start with pepper spray stampede: Woman pepper-sprayed her rival bargain-hunters as 152m expected to flock to stores

But few can have expected even the most determined of bargain-hunters to adopt the brutal tactics of one female shopper in a Los Angeles suburb who attacked her rivals with pepper-spray: a substance more recently associated with police brutality against Occupy Wall Street protesters.

The woman, whom witnesses said appeared to be defending an X-Box games console, has not been found or yet identified. Perhaps unsurprisingly, the gigantic store remained open amid the mayhem and other shoppers continued to roam the aisles filling their trolleys with goods.