I emailed the author earlier, and wrote a blog piece on this.
He mistakenly or perhaps intentionally equates Catholics with Italian immigrants who became anarchists.
http://area43.net/2012/09/the-new-york-times-equates-catholics-with-anarchist-radicals/
I think it's an important point as the Democrat party is realistically a socialist movement, and as the author of the original piece is a Democrat, he wishes to obfuscate his own movement's involvement in terrorism by blaming it on others. This is in addition to his idiotic attempt at providing an imaginary contextual framework in which he can equate a tyrannical, barbaric, immoral ideological movement posing as a religion with the Catholic church.