Besides the excellent points Decem makes, one of the comments on the blog post wrote something worth considering:
Christian Churches are being burned in Egypt; Christians are being persecuted in Sudan, Indonesia, Iran, Pakistan and many other Islamic Countries. Why would we invite Muslims into our churches or go to read at a mosque? Why don’t we hear a loud and vocal condemnation from all Muslims against the injustices that our brother Christians are enduring? Why is an end to Christian persecution not shouted from the top of all mosques?
There was a time when the Mohammedans were the enemy against whom all of Christendom, the secular powers and the Church, united in a sacred war of prayer and the sword (there is a very beautiful rite of blessing of armor for the Christian Crusaders in the Roman Pontifical). The Sacred Order of Friars Preachers had a Votive Mass against Turks and heretics in the Dominican Missal, and even secular poetry (such as the Song of Roland) was inspired by the sacred war against these heathen, who were threatening Europe.
But now... in a few decades' time the Muslims will outnumber the Europeans and travesties such as this will be occurring more frequently and under state mandate (if things are not done to prevent this now).
Why has this happened?
Answer: Europe has abandoned the faith, and American Catholics have given themselves over to a heretical notion of "tolerance" that will accept even those who blaspheme Our Lord and God Jesus Christ and the Mystery of the Most Holy Trinity, which He vouchsafed to reveal unto us despite our utter unworthiness.
And this is how we thank Him...?