Amazing that you're still not getting the point: Their "protests" at soldiers' funerals is quite bad enough. They don't need anything extra on their resume to make them really bad.
The original post with which you took offense was one stating that "The family....doesn't seem that extreme."
While in bad form, it doesn't make it all the way (at least, personally) to extreme. What they are doing is obviously legal, even if it is reprehensible (the same with neo-Nazis and Aryan Nations people marching and demonstrating). Furthermore, neither you, the article, nor other freepers so far have even suggested that the Phelpses support the murder of either the troops, homosexuals, or other groups. The same couldn't be stated about neo-Nazis and the Aryan Nations. Thus, unless you give more points other than their protests at funerals--such as they are calling for troops or homosexuals' deaths or violence toward those groups--they don't seem extreme.
The Phelpses target only homosexuality (bad, but there are other bad things about modern American society besides only homosexuality), and see the punishment as struggles in Iraq and Afghanistan and the deaths of American soldiers rather than only September 11, but you can see that the two ideas are related.