I don't mind. But one could say we are driffitting way off-topic...

Macumba is the generic name given to the more "magical" part of some rituals. And it is the name by which "common sense" calls most religions with some form of african descendency in Brazil. Candomblé is called Macumba in some parts of the country.

As for any religion being "pagan":

"Within a European Christian context, paganism is a catch-all term which has come to connote a broad set of not necessarily compatible religious beliefs and practices (see Cult (religion)) of a natural religion (as opposed to a revealed religion of a text), which are usually, but not necessarily, characterized by polytheism and, less commonly, animism. There is little organized "-ism" in paganism." - http://www.reference.com/browse/wiki/Paganism

That is what I meant before. Pagan is a generic term used to describe non-"book religions". Hinduism is actually a book religion.

The liturgical trance, which is what I think you mean by zombie , is a big part of most of this religions that came from the Gold Coast of Africa. It varies from place to place. In Cuba, for example, there is no incorporation.
In Brazil there are many different forms of Candomblé. It varies a little from region to region. And the name changes a little too. Some of it's names are: Batuque, Macumba, Maracatu, Xango among others.

I haven't seen the images on Sepultura's video (not really my thing ) but if you would like to see images and read about liturgical trance try one of the many photographic books of Pierre Fatumbi Verger. They should be easy enough to find anywhere that has a good library or bookstore with imported books .