Cheng was not abducted to the mainland; he was arrested on the mainland side of the boundary crossing at the high-speed rail station in Kowloon, coming back from Shenzhen. The fact that there's a border crossing in downtown Hong Kong is its own issue, but his case can't be called an abduction (unlike the case of the booksellers a few years ago).
Anyway, please stop spreading falsehoods, there's enough of that going around.
There's a difference between one person getting arrested and mass deportation. One should be able to criticize the former without falsely claiming that it's the latter.
Even clarifying to people he hadn't made it across the border yet, it still feels different than if he was picked up in Shenzhen.
Did you even see his interview with the BBC? Legally would not say anything about his hiring of prostitutes. No medical evience of the torture he claimed. The only hard evidence that was provided were CCTV tapes of him going into local massage joint. You would think that if he didn't obtain the services of sex workers he would come out and say it. Interesting that the British also let him go.
I've seen those videos. You have to be kidding if that's sufficient evidence to say they are being shipped off to Chinese black camps. As for the alleged rapes - the evidence is even more lacking. The primary source used is a facebook account using a pseudonym who claims he's an emergency doctor who then says he "swears" that he's telling the truth.
Everyone needs to be held to a basic standard of logic and scrutiny, not a double standard simply because one might agree with the ideals of a group. There are numerous ludicrous claims on the government and police side. But the same stands for protesters as well.
There is video and photo evidence from multiple sources on Twitter. There have been extensive reports of victims like British consulate worker Simon Cheng being abducted to the mainland and being tortured. Obviously there wont be any "corroboration" from the PRC state security agency or police...