Actually, despite its name, the WBC isn’t Baptist at all, but more Calvinist, especially in regards to predestination. So Ms Phelps-Roper is already headed for hell (or not) according to a plan God spun out æons ago and there’s fuck-all she can do about it. Same thing with me, and you, and you, and you there, hiding in the corner. Yeah, you.
Therefore their motive for picketing isn’t to turn someone aside from their wicked ways and be saved—it’s a done deal already. It’s… Actually, I’m not sure what their motive is. To make people feel bad, I suppose.