Q: Would photons trapped in a back hole have orbital angular momentum? In a black hole radiation is trapped, it can't escape. Its trajectories we bent by the curved spacetime.
So photon would perform at least  a partial rotation about the black hole. 
Would this introduce orbital angular momentum of the photon about the black hole position? 
Can I use:
$$ \mathbf{L} = \mathbf{r} \times \mathbf{p},$$ with $E=pc$?
