It really isn't smart to do this kind of thing. Once an organization actually attacks you, it's very easy to decide that any legitimacy they view themselves as having is irrelevant and to come back next Monday with mortars and machine guns.
> any legitimacy they view themselves as having I'm pretty sure that's not actually how power or legitimacy work anyway.
The solution is then always an organized military response. This applies whether it's your government or somebody else's.