Protesters from the Westboro Baptist Church, reviled for such acts as showing up at the funerals of U.S. soldiers with signs reading "Thank God for Dead Soldiers" and "Pray for more dead soldiers", serve as no reason to consider weakening the First Amendment. The protesters are offensive, certainly, but they pose no threat to America or its citizens. Their protests have gained them no support for their ideas, and have even unified communities in opposition to the church and the ideas it promotes.
The Westboro Baptist Church has made a name for itself by protesting against homosexuality at funerals and other unexpected locations. Although their decision to protest at these solemn events is offensive to most people, the rights of the church, however ignorant and offensive, does have protection under the First Amendment.
The U.S. guarantees free speech to its citizens. The protests of the Westboro "church" are, in my opinion, morally reprehensible and cruel. But, once we start denying free speech to somebody, simply because we don't like their opinions, we undermine the rights on which our country is built, and we open the door to censorship.
The first amendment is there for everyone. We can't pick and choose who it is for when we all have freedom. We are all in America and whether everyone agrees or doesn't they have a right to freedom of speech just like everyone else. It does not state that only certain people can speak freely.