I saw the WBC march some years ago at Southern Decadence. However, a counter-protester challenged them by marching in front of their procession. This rather skinny guy was stark naked, holding a large, heavy bible in front of him, and sporting a very large (10+ inches, although thin) and very, very, erect penis. The WBC people just pretened he wasn't there. It made quite an amusing sight!
Although I though I was raised in the Baptist church, I never could understand the fundamental, or "primative," Baptists, like WBC. They believe very strongly in a doctrine of absolute predestination. In effect, because God is perfect, he cannot change, and therefore cannot change his mind. Because God controls all, this means that everything that happens in the universe was pre-determined by God's unchangable plan at the dawn of time. As such, those who will go to heaven, and the sinners and others that will burn in hell, were predetermined at the beginning of time, long before they were even born. Further, everything and anything that happens to anyone, chosen, non-chosen, and sinners alike, was predetermined. I noticed that the godhatesfags site has a classic discussion of this doctrine:
http://www.godhatesfags.com/writings/predestination.html
If one tries to apply even a little, weak, logical argument, one finds odd contradictions. For example, if homosexuals exist, it must be because God predetermined it, and therefore wants it to be so. (This does not mean that God approves of or loves them. Although not part of the doctrine per se, these groups believe that God virulently hates many of the humans He predestined the creation of. ) Further, if all was predestined, then there is nothing that anti-gay protest, nor the "adgenda" of gays and gay media, can do to change things, making these activities utterly pointless. Yet, "believers" waste vast resources protesting against gays.
They explain the existence of sinners by saying that God needs these to demonstrate His justice, and therefore of necessity predetermined their existence. However, it would seem that if these people exist so God can demonstrate His justice, it would be blasphemous for man to take any action aginst these people, as man would then be presuming to intrude on the providence of God. Yet, these "believers" gladly engage in such judgement, which would appear to make them blasphemers, and therefore evil sinners themselves.
Curiously, the doctrine maintains that although God predetermined and created sinners, he did not create acts of sin. Sin, it says, was created by one man, Adam. There are two serious contradictions here. One, if God really predetermined all, then he predestined that Adam would sin. Second, if God created sinners to demonstrate his judgment, then he needs to have them commit acts of sin, for if sinners did not commit acts of sin, their behavior would be identical to that of non-sinners, and it would be impossible to use them to demonstrate judgement. Therefore, it would seem necessary that God must have created sin in order to allow his demonstration of judgement to be possible.
And so on...