Every single one of them.
Ratzinger is the perfect pope
"Should Pope Benedict XVI be held responsible for the escalating scandals over clerical sexual abuse in Europe?"
Yes he should, and it's going to escalate a lot further, as more and more victims break through the guilt of their childhood indoctrination and come forward.
"Should he be investigated for how cases of abuse were handled under his watch as archbishop of Munich or as the Vatican's chief doctrinal enforcer?"
Yes, of course he should. This former head of the Inquisition should be arrested the moment he dares to set foot outside his tinpot fiefdom of the Vatican, and he should be tried in an appropriate civil - not ecclesiastical - court. That's what should happen. Sadly, we all know our faith-befuddled governments will be too craven to do it.
"Should the pope resign?"
No. As the College of Cardinals must have recognized when they elected him, he is perfectly - ideally - qualified to lead the Roman Catholic Church. A leering old villain in a frock, who spent decades conspiring behind closed doors for the position he now holds; a man who believes he is infallible and acts the part; a man whose preaching of scientific falsehood is responsible for the deaths of countless AIDS victims in Africa; a man whose first instinct when his priests are caught with their pants down is to cover up the scandal and damn the young victims to silence: in short, exactly the right man for the job. He should not resign, moreover, because he is perfectly positioned to accelerate the downfall of the evil, corrupt organization whose character he fits like a glove, and of which he is the absolute and historically appropriate monarch.
No, Pope Ratzinger should not resign. He should remain in charge of the whole rotten edifice - the whole profiteering, woman-fearing, guilt-gorging, truth-hating, child-raping institution - while it tumbles, amid a stench of incense and a rain of tourist-kitsch sacred hearts and preposterously crowned virgins, about his ears. WaPo
I've resisted putting captions in the above because I've no doubt I would have been coursed by one or two Dawkins/FSM fans; not to mention fans of herself.