Let me re=phrase that, They have the same right as the rest of religions in the world to to build a place of worship where they want.
If we wanted to build something we wanted to, where we wanted, I can just see the extremists in our religion (especially in Israel) flag burning, pelting the police with rocks, burning dumpsters etc.
They are just as equal in this country to place a mosque anywhere like we would a Shul. When it disturbs them that we have Shul built near something of theirs, we would fight just as hard to continue having it built.
We are living in Galus and we should not look to make problems for ourselves. There is no reason to to stop the mosque from being built.
My view, is that THEY HAVE THE RIGHT TO BUILD THE MOSQUE!