Thou shalt not speak ill of the dead

At funerals, it is appropriate to express condolences, grief, and to eulogize the dear departed. Anything else (political demonstrations) is unbearably painful to the bereaved family. All families are entitled to a dignified funeral for their loved ones. Especially so are the families of servicemen who died for my country.
The case of the Snyder family and the "Westboro Baptist Church" just went before the supreme court. The Snyders were conducting a funeral for their son, a marine killed in action in Iraq. The "Westboro Baptist Church" conducted a hateful political demonstration at the funeral.
Much of the Supreme court argument centered around the right (or lack of right) of the "Westboro Baptist Church" to express hateful opinions. This is wrong. The real issue is the right of the Snyders to conduct a funeral for their son free of hateful and improper political demonstrations. The "Westboro Baptist Church" is perfectly free to express their opinions, just so long as they don't do it at funerals. There are plenty of other times and places where they can speak as freely as they please.
America prides itself on being a land of law. American law must provide families the right to bury their dead in peace.