I take it to mean it was "the incident on tape" which was handed over to the SS - so the tourists didn't give up their camera, just the tape inside it. The second half of the sentence is shaky. "Which" indicates what you are already talking about, so no need to include "the tape" again. here's a re-write: "Tourists from China with a video camera caught the incident on tape, which they then turned over to the Secret Service."

Brandon, I did NOT say it was a definitive answer. I said "in a way", meaning if at all, which would indeed refer to the tape. If you read my answer, I corrected the sentence; though it may be debatable, in the correction, "which" refers to "the tape", not the act of catching the "event" ON tape.

With due respect, I don't think the "which" refers to the tape. Please note that it is "caught ...on tape", which is an action and not a physical thing. It is like "the thief was caught in action". If indeed it were the tape that was turned over, which I still don't agree, than it should be corrected to be "....caught the incident on a tape."

No, "which" does NOT stand for "camera", it stands for the "tape" in a way. However, the sentence should read: Tourist from China, with a video camera, caught the incident on tape; which they turned over to the Secret Service.

I believe Peachey's explanation is sufficient. "Which" here pertains to the 'tape' and not the 'camera'. :)