Dangerous mosques building in USA

There is no doubt that according to American Law these mosques can be
built. The only issue is what will be taught and encouraged in them. Many will
be preaching the establishment of Shariyah law and hate towards Israel, Jews
and probably Christians as well. They will either be stopped under 'hate
speech' laws or they won't be stopped and violence will ensue from them
resulting in a mini-civil war which will break out in America. It's a simple
situation - stop them now or stop them later. Stop them now means to listen
to their sermons (no need to bug - the places are open to all) and
prosecute them on laws that prevent hate speech meant to incite and deport the
non-citizens who come to preach. Many will be peaceful and will focus on
non-political and non-Anti-American things and won't be a problem.
I was in LA this year at the shul with many Persians. They told me that
their fellow non-Jewish Iranians have stopped frequenting mosques because they
are so radicalized and preach anti-American sermons and they don't want to
be associated with such things.
We can fool ourselves into thinking that these mosques will all be just
fine examples of pluralism in America until we realize the truth - their goal
is to end pluralism in America.
If we wake up to it too late and have to fight it after violence ensues
then it will be much worse for the Moslems in America - most of whom don't
want to hear anti-American teachings and want to co-exist in a democratic
pluralistic country. They are the ones who need to stop any anti-American
activity in those mosques or they will suffer when the wrath of America comes
down on such hate speech. I hope they are successful and don't have to suffer
for what their co-religionists do in the name of radical Islam.