By today’s standards the Ku Klux Klan is a religious organization.
Yet we go after them cause they are a murderous organization.
We need to treat the muslims likewise
Has the Klan ever presented itself as a religion? It has certainly opposed religions it doesn't like. Even so, we only go after KKK groups that have actually engaged in murderous behaviour. If they don't try to kill anybody, we generally leave them alone.
Mohammedanism lacks a central authority. How closely tied are the various islamic congregations? Does the fact of one mosque (islamic congregation) directly engaging in terrorism taint them all?
I'd still like to know how we (as Americans) define a "religion", and how we make sure that those who get to codify the definition are kept under control. I'm not convinced that the founders thought this through completely, and I really don't want to have to resort to the Second Amendment in order to settle issues regarding the First.