Regardless of the authenticity of religion this discussion is about where a religious building can be built in a country that promotes itself as a haven of religious freedom. There is a group of people who want to blame and punish the Muslim religion for the acts of fanatical terrorist Muslims on 9/11/01. Considering our history, is this a reasonable attitude for the U.S.?
It's not a reasonable attitude whatsoever, EVERY Religion including Christianity has it's violent extremist, anyone with even a shred of common sense knows that it is only the MINORITY of Muslims that are violent or involved in terrorism, you can't punish an entire Group based on the actions of a few psychotic assholes, if you are going to deny one religion the right to a religious building then you had better deny ALL religions this right, because every single religion has it's share of Violent Maniacs.