I'll not budge on this, as much as I loathe WBC. I didn't serve in two wars to see the 1st Amendment breached.
Next, will be saying things like the Bible doesn't approve of homosexuality. It's a slippery slope.
I hold that the First Amendment is fine as it is, with no further amendments. But Westboro is not about legitimate assembly to petition the government for a redress of grievance. It is about harassment, pure and simple. The people they are harassing are vulnerable, not powerful, and have no ability to affect the policy they claim to object to. Their behavior would disgrace a snake.
/johnny
IMHO, it stems from the legal confusion of the concept 'public'. Its isn't anywhere you can go, it's places owned BY the public, and consequently, the government. On that property, their rights are inalienable.
Its why Westboro gets away with doing it at military funerals, because the property is owned by the government.
Private owned cemeteries would be another matter. They would be trespassing....and personally, I would have their heads on a stick for what they do.
just my 2 cents.