Someone Else's Headline

So this is the headline that blew my mind today: ""5 States Consider Bans on Protests at Funerals." They have also protested at the funerals of those killed in the Sago Mine explosion. To make matters more ridiculous (in case you were unsure where I stand on this) none of these people who's funerals they are protesting at are - to their knowledge - gay.
A spokesperson for the group said that they feel these are not private funerals, they are patriotic pep rallies, so apparently that gives them the right to try to horn in on whatever media spotlight there is. They apparently have signs that include such sentiments as, "Thank God for dead soldiers."
Now I am all for free speech and I have participated in protests (though never at a funeral) and I don't want to get into a discussion here of the right to political expression at whatever time you deem appropriate. And I recognize everyone's right to believe what they choose to believe. But I am still scratching my head over this. But I have to ask - what makes it okay for a grieving family to have to walk past a sign that says, in essence, thank God your relative is dead?