Why does violence in a sacred space feel so very wrong?

Mike the Heathen sends this, “Violence and Sacred Space” at The Wild Hunt. The piece includes this:

…Pagans can respect the sacred nature of a Christian church, even if they don’t follow the religion; and vice versa, a Christian can recognize the sanctity of Wiccan circle or Heathen temple. “The intrinsic lines” separating the sacred from the common world “are not abstractions.” This accounts for Charleston’s community turnout in support of the AME church. As [Kelly] Scott [chairwoman of the Charleston Area Lowcountry Council of Alternative Spiritual Traditions] said, “It does not matter that my spiritual path is different from those at Mother Emanuel….”