Fight hoods.

The two bully boys are somewhat surprised at your show of courage, and your first mule kick to the groin of the shorter one spins him moaning into a wall. Your injured American ally staggers to his feet, but somehow produces a sudden flurry of weird martial arts hand moves that end up with the larger hood's knife skidding across the platform and under the train. Things are looking pretty good, but the shorter hood pulls half a brick from somewhere and hurls it straight at your head.

The last thing you remember is sliding onto your knees and into unconsciousness...

Regain consciousness a few minutes later.