@BillRM,
No, sick torture porn showing people being tortured for sexual pleasure should be banned. Nobody has spoken about banning horror films, literature or music. We're talking about exploitative pornographic material that has been directly linked to real life murder. The women in these films are exploited, women, (and it's almost always women) desperate for money for whatever reason, not even fully aware of what they were signing up for, or pressurised by a domineering male figure, so the notion of consent is so very loose as to be almost meaningless.
You have to ask yourself what sort of sick individual would want to watch such material anyway.
In the case I posted, the victim consented to being filmed with a noose around her neck, not to being killed, but it probably fits in with your definition of consent which is so very loose as to be almost meaningless.