They are the same Arabs that massacred in Hebron in 1929. They are the same Arabs that rammed passenger jets into the twin towers in 2001. They are the same Arabs that are presently decapitating innocent civilians in Syria and Iraq. They are the same Arabs that entered a synagogue yesterday morning in order to murder peaceful worshippers.
Even if Yishmael did teshuvah, apparently a large number of his descendants did not. Look at them celebrating the massacre: