I strongly suspect that post by GUEST 07-Apr-02 - 06:01 PM was a bit of what they used to call "black propaganda". In this case, posing as a sympathiser with Palestinians, but phrasing the post in such a way as to try to turn people against them.
Attacks on religious buildings of any sort, wherever they are carried out, are inevitably damaging to whichever side is identified as carrying them out. Their only purpose is to try to get the pot boiling. In this case the purpose would be to try and provoke retaliation against Muslims, with the aim of generating another cycle of atrocity and counter-atrocity.
People who set out to generate and carry on that kind of cycle of violence are the enemy of all of us. Whichever side they might be on.And you can never make easy assumptions about that either, any more than you can about people making inflammatory posts on the Mudcat.