Forget the outrage -- it would be enough for me, but it isn't even 10% of the problem.
A whole lot of being human is about symbolism. Constructing this Mosque is designed to let the Muslim world know that we can be attacked and defeated. It memorialises a great Islamic "success", and shows that we are too decadent, foolish and confused to understand raw power.
This is an ACTUAL terrorist recruitment tool, not a fake one like Gitmo or Abu Girab.
Recruits like to see evidence that they can kick your ass, not that their ass is likely get beaten, locked up, and left to rot -- with a very long dry spell prior to any supposed virgin prospects.
How can we have liberals that go berserk over a Christmas tree but embrace a "religion" that condones the slaughter of those that disagree and the abuse of women in this life and the next -- for "diversity".
The liberal hatred of America truly trumps all -- there really isn't any other explanation that even remotely makes sense.