Being in a crowded, darkened theater is a special circumstance, in which people are remarkably vulnerable (as the Dark Knight Rises incident painfully illustrates). Thus, shouting Fire! in such a venue could cause deaths and injuries - and thus, it makes the classic example of speech which can damage and may be censored for the good of society. Without compromise of the ability of the people to hold reasoned public discussions of religion, politics (the two subjects mentioned explicitly in the First Amendment), or anything else.
Westboro makes its publicity splash by verbally assaulting people who are at their most vulnerable. They are picking a fight, and that should be understood in court as an assault.
Glad to see the restriction but the limits need to be increased........Say, 6 hours before and after the funeral, 1000 feet of the funeral versus the 300 feet stated.
If you are going to put in a law, put some teeth into it.