Occupy San Diego occupied a bridge over I-5 in Clairemont last November. There is a man in the video who strongly resembles Aurora shooter James Holmes. The man is wearing black and what appears to be a bulletproof vest. Here is a capture from the video side-by-side with a known picture of James Holmes.
Here is the video. The vested man in black appears at the 23 second mark. You decide.
Reportedly, the suspected shooter was also wearing black and a bulletproof vest.
Update: There has been no evidence linking Holmes to Occupy San Diego. As one commenter noted, perhaps I should consult my optometrist.