Because you only read breitbart.
The Muslim community isn't silent on Islamic terrorism.
Indeed they are not silent, They loudly celebrate their radical Islamic terrorism...why in the world would they still be a part of such a religion if they didn't agree with it...After all their book tells them to kill anyone that believes in scriptures other than their own.....The entire concept of Islam is against the constitution where women are oppressed and other religions are persecuted...This is what is so mind boggling how liberals could be so supportive about such an oppressive institution...