This vocal minority that you mention is thought to be about 10% of the entire moslem population. (Though some place that figure even higher, let's stick with this conservative number.)
IOW, just 10% of the moslems in the US puts that number at about 300,000.
So in the US we have 300,000 people whose goal is jihad.
This "vocal minority" aims to cause major trouble if we let down our guard for a moment. And their numbers are quite large enough to cause that holy confrontation.
This vocal minority that you mention is thought to be about 10% of the entire moslem population. (Though some place that figure even higher, let's stick with this conservative number.)
IOW, just 10% of the moslems in the US puts that number at about 300,000.
I've seen the 10% figure before, but if that applies to the entire Mulsim population globally, that does not necessarily mean that 10% of the US Mulsim population is violent and radical. In fact, it is probably far less.