That is not my only motive. My main motive is that I happen to think that the course of action being advocated would be extremely unwise and not lead to anything like the desired results (and would lead to the undesirable result of more dead people). My secondary motive was, originally, to try to persuade the OP that bringing the subject up at all was an incredibly bad idea, given that people have already been influenced by discussions of this subject to make death threats against an actual person. Trying to stop people making incredibly stupid statements which would incriminate them in the (hopefully) unlikely event of someone actually attempting to kill AI researchers was quite far down the list of reasons.