Many misguided people like to insist that most Muslims are peaceful, well how many Muslims did it take to blow up the Boston Marathon? It only took TWO brothers who were inept losers with little resources.
There is no such thing as a moderate muslim. After 911, the so called moderate muslims all around the world celebrated, they danced in the streets, passed out candy, praised alah..... and they ululated. And you can bet our US moderate muslims did the same things behind closed doors.