[Kelly_2000]

Yes it reminds me of a an Imam in the UK called "Doctor Hook" (abu hamza) he continued as an asylum seeker to generate hatred and dissent within the UK. The left wing government in the UK only kicked him out of the country when the USA demanded his extradition! To face criminal charges of terrorism and conspiracy in the US Courts.

There guy was an immigrant to the UK yet there he was politically opposed to the very country offering him sanctuary and a new home

Why does it take so long to rid communities of these (in most cases) malignant parasites?

[wita]

...yet there he was politically opposed to the very country offering him sanctuary,...

Could apply to half the citizenry of voting age in the US of A.

[ARepublicanForAllReasons]

Why does it take so long to rid communities of these (in most cases) malignant parasites?

I would hazard a guess that, firstly, we need to have the right laws in place, with courts that understand and respect their plain meaning. And secondly, we need prosecutors who are focused on these cases. Once that is all in place, the Mullahs will have to be somewhat subtle in their recruiting efforts.