Here’s a scary piece at the Christian Science Monitor that gives a sense of how far the radical Islamic infiltration of Britain has progressed: A defiant Islam rises among young Britons. (Hat tip: LGF readers.)

In Dalston market in north-east London on Thursday, “Abdullah,” a Muslim watch-mender and evangelist, was in a pugnacious mood.

“We don’t need to fight. We are taking over!” he said. “We are here to bring civilization to the West. England does not belong to the English people, it belongs to God.”

Two days later in a prosperous West London cafe, Mr. Helbawi pondered the attacks. “It’s not a surprise but I am still shocked,” he said. “How can they do this? London is a city for all the world. This is not Islam.”

Hours after the bombings, Helbawi logged onto an Internet chat room run by British Muslim extremists. “They were all congratulating each other on the attacks,” he said. “It was crazy. They were talking about how they had won a great victory over the infidels, as if they had just come back from a battle.”

Although so far, there is no evidence that British Muslims were involved in the bombs, there is little doubt that many British Muslims feel that Britain “deserved” the attacks for supporting the US invasions of Iraq and Afghanistan.

“Because Muslims explain the conflicts in Iraq, Kashmir, and Israel through Islam, every Muslim feels involved,” said Helbawi. “People watch television and see Palestinian women being hit and pushed around by Israeli soldiers, and get angry and feel that they have to do something.”

But beyond anger, a sense of alienation often drives radical Islam. Many second- and third-generation immigrants find themselves cut off not only from their parents’ cultures but also from a British one that includes alcohol and looser sexual mores.

“If you don’t drink, it really cuts you off from English society,” says Ummul Choudhury, a London-based Middle East analyst for the Gulf Centre for Strategic Studies. “The view of the older generation is also that you do not integrate. If you do, you are told you are betraying your culture and religion.”

The resulting isolation makes it easier for young Muslims to develop a contempt for British society.

“There is also a lot of racism toward white British people,” says Ms. Choudhury. “It’s not really something that people want to talk about, but there are definitely some things that Muslims say between themselves that they would never say in front of white people.”