What does it mean to picket a funeral?

[Karter]

I have heard recently that Westboro Baptist Church is planning to picket Steve Jobs' funeral but I don't know what that means and I was hoping that someone could tell me.
Thanks so much

[Elizard]

They like to protest at funerals, saying that for some batshit reason or another, god has stuck this person down in retribution. It's nuts. I don't know what they have against apple, and if I read their reasons I wouldn't understand anyway.

EDIT: I'm not even entirely sure it's not all some huge joke, or way to make money or something. They posted this news to twitter from a goddamned iphone

[kaliesq]

and to follow up ... it is a very tasteless and shameless thing to do

[Dude the Obscure]

"Picketing," in this context, means to carry and display signs with political messages on them. The signs are usually attached to a stick that you can carry in your hands; the original meaning of the word "picket" (related to the word "pike") was "a stick or pole."