I don't think they're all quite that bad and not all are deserving of such anger being directed at them. If you take your everyday run of the mill Christian, they're really not that different from your everyday Pagan, personality wise. They just have a faith that's different from ours.
The Pope though... He seems a little out of touch with the modern world and appears content to be inflexible on points of doctrine and dogma - which make up the bulk of what the Catholics follow, so that makes sense. Unfortunately for them, I see that this rigidity will be an undoing for the Roman Catholic Church, as if you fail to adapt to a changing environment, you will eventually be swallowed up by it.
He could make a statement that the Church Sponsored witch hunts were a bad idea and that so many people who were wrongfully accused of any wrongdoing were killed and it's a terrible mistake that will never be made again. And I think that would probably satisfy a lot of people. But come on, don't realistically expect the Pope to say "You know, witches aren't so bad and you should go right ahead and be one" Cause he's not going to say that. It's completely counterproductive to the teachings and goals of the faith that he happens to be the human leader of. It's all politics. He wants more people to vote for him than the people he's running against. And like all political campaigns, sometimes it gets dirty. And who apologizes for playing dirty ball in an election year?
But honestly, I don't think Starhawk has any grounds to call him out. What's past is past. Big mistakes were made. On both parts. As Kitsune pointed out, there was once a time when we Pagans held power and Christians were stoned to death or rounded up and thrown into arenas to fight to the death or be attacked by wild animals. As the various pagan faiths do not have an elected leader, it's not like we can have the Pagan Pope apologize for our own brutal past, so why should we expect an apology from the Pope? Starhawk might want an apology, but she doesn't speak for me. Sure it would be nice if the Church could acknowledge some of its past mistakes, but do I expect or need it? No. My life doesn't revolve around what the Catholic Church does or Doesn't do, and I'll keep trucking whether or not they apologize.
We need to drive on toward the future. We need to all get over the past and start over together. We don't all need to be Pagan. We don't all need to be Christian, Muslim, Jewish, Buddhist, Shinto, Hindu, Atheist, or even Pastafarian. We just need to co-exist in peace. I'm looking forward to when that's possible.
"I just want to play on my Panpipes..." Cake