[ghost of quidam]

If you'll double-check the article, the Muslims quoted are all U.K. citizens, I believe.

If you are going to let this type of rhetoric go unchecked,
you'll get things like the tube bombings, or worse. Law enforcement after the fact can help arrest the perpetrators, but leave in place the support network and mindset that spawned the attacks.

I agree that pro-active and pre-emptive law enforcement/monitoring would be better, but it's one thing to penetrate NAMBLA or some other such organization, quite another to penetrate and compromise a terrorist cell(s).

[Mylo]

I don't think the two are that different. Both are groups of nut-cases who publicly proclaim their proclivity and intention to commit crimes. Either can be infiltrated, monitored, bugged, tailed, and eventually arrested (like they got those NAMBLA pervs here in San Diego planning to do some pedophilia south of the boarder).

The alternative to letting "this type of rhetoric go unchecked"; is to infringe upon our right to free speech. Curtailing our Constitutional rights under the pitiful attack of these jokers incapable of anything more than killing a few tens, hundreds, and occasionally thousands of civilians is just not an option to anyone who values our Constitution and the freedoms assured to us by our founding fathers.