This kneejerk proposal announced to ban violent porn is, in my opinion, one of those dangerous law - laws that are proposed and then passed based on opinions, sentiments and reactions (much like the anti-terrorism law).
There is zero scientific proof that links violent porn with murder just as there are currently no evidence which links violence in films/games/music/books to killings and yet here we have a lady who has managed to convince the government to propose a law to ban so called violent porn. Out of what? Pity?
Violent porns may be disgusting, and if the violence portrayed are real, then by all means arrest the perpetrators. But to say that a person can be influenced by such films is threading on thin ice. Mainstream films like the godawful 8MM features sexual violence, yet in this proposal, the entertainment industry isn't covered by the law proposal! Apparently simulated sexual violence (in films) is okay then (the effects, if any, should be similar no?).
Update: A commentator at MediaWatchWatch provided an interesting link of a research that debunks the myth that more porn = more rape. Apparently the reverse may be true.