Not all Muslims are Arabs and not all Arabs are Muslims.
We have to be careful in defining terms here. Arab is a race and you are either born it or not. Islam is a socio-economic-political system and you can elect to reject it.
One of the most outspoken critics of Islam in America is
Brigitte Gabriel, a Christian Lebanese (only a few generations ago, Lebanon was a predominantly Christian Arab Nation until the followers of Mohammad surged in and drove a lot of the Christians like Ms. Gabriel out).
See:
http://www.actforamericaeducation.com/welcome/
FOX had a Christian Chaldean Bishop on their show this morning. He was an Arab.
Only at the risk of your life and limb and property. They KILL apostates.