One's freedom or rights are not absolute, not when they infringe upon the rights or the freedoms of others.
This is an instance where one group's rights fall outside the bounds of constitutional protection.
I know it's a slip of the finger there expat, but groups do not have rights. Only individuals have rights. This is important to your point.
First off, none of our Constitutional Rights are absolute, nor was the Constitution intended to be a suicide pact.
I do not believe that Contitutional protection should be extended to a so called religion that when followed correctly has the stated purpose of abolishing all other governments and establishing its own Sharia rule.
To me this is a clear case of self-preservation and common sense.
After reading of the small Christian Church that was destroyed on 9-11, the answer came to me. Let the muzzies build where they want and the size they want. Then on either side of their mosque, build a Christian Church and a Jewish Synagogue. Each should be twice as tall, twice as wide, and twice as deep as the mosque, in other words, eight times the cubic footage. Both should be constructed of black granite, plain, very fortress-like in architecture. Let’em look up to, and quake at the sight of, their moral superiors!