The Washington Post reports on how Anjem Choudary manages to avoid prosecution while indirectly recruiting young British Muslims to fight for the Islamic State.
[E]ven as a coalition that includes Britain and the United States wages war on the Islamic State, Choudary and other enablers remain free to spread their seductively messianic ideology on the streets of the United Kingdom and globally, through the Internet. They do so by taking advantage of the very rights they condemn as un-Islamic and by using their considerable charisma to lure lost souls.
In an accompanying video, Nick Lowles of Hope Not Hate does a good job of explaining the danger posed by the likes of Choudary: