It has to start on the individual level, then it becomes a matter of segregation and laws against Sharia in communities.
If ever was the absolute need for individual vigilantism against a common enemy is the war against the assimilation by Islam.
Federal protection has already surrendered, is occupied and breeding more enemy combatants. Defunding is a start, just like putting out a fire all you have to do is remove part of the triangle, cut off the fuel, the air or its heats source and it will die.
...”If ever was the absolute need for individual vigilantism against a common enemy is the war against the assimilation by Islam.”
I don’t see where Islam intends to assimilate itself anywhere but to and with itself.
It is us who fight against the population’s assimilation
to Islam against our free will. We fight against the jihad which seeks to establish an Islamic caliphate.