1-By your own definitions, there is already a Mosque at the Pentagon. No outrage?
2-There are three Mosques already operating in lower Manhattan, including Park place. Outrage?
3-The local community (and it is a local issue) is in favour of it, as I would be- it will provide some welcome, competitively priced local facilities, open to all.
4-The Board of the Park 51 Community centre is comprised of Jews, Christians and Moslems.
5-There will also be a non-denominational 911 memorial there- hardly 'triumphalism'.
6-Miss Universe USA is Muslim babe. Outrage?
7-When the Community center was first announced in the NY Times in 2009, there was no controversy. The blogger who first started whipping it up, Pamela Geller, believes that Obama is the love child of Malcolm X.

8-Park Place is not at GZ or even the WTC at all- it is a non-descript, by local standards low rent side street 2.5 blocks away from the nearest edge of the WTC, or more like 6 Manhattan blocks from the closest part of actual GZ, the North Tower. It's neighbours are lap dancing and local bars, pawnbrokers, snack food shops including a small Burger King, and local businesses. The shining symbols of US consumerism such as Armani and Calvin Klein will be well represented at the new WTC however- that is where the tourists will go.
9-The Imam, Rauf, is well known as a moderate who speaks out against Islamic terrorism- indeed is sent internationally by the US State department to speak for the USA, religious tolerance and moderation. Attempts to slander him by the same people who say they wish to fight Islamic terrorism are despicable, in fact some might say treasonable- although I have long since realised the true patriotism of those who most vociferously claim to be an American Patriot is only a weak veil.
Meanwhile, the GOP says it is a 'Deficit Hawk' but actually wishes to extend tax cuts for the Richest 5%- at a cost of many times more than extending unemployment benefits. They bitterly oppose any job creation schemes by the US government (at least while Obama is in power). Any wonder then that they are pushing this non-issue as a red herring to steer people away from the real Issues? The wonder is that so many gullible sheeple in the US are swallowing it whole.
The final irony is that in the process, the self styled 'Patriots' hyping this whole thing have stabbed General Petraeus and the US military/ Nato right in the back in their efforts in Afghanistan, and whats left of them in Iraq. Nice one- actually if it does get NATO and it's hopeless cause out of Ghan and Iraq even sooner because of this storm in a tea cup, that at least will be one welcome side effect. The only one.