For years now we have seen radicals and terrorists coming out of Boston mosques especially the Islamic Cultural Society Mosque in Roxbury. Charles Jacobs in particular and Americans for Peace and Tolerance have spent years trying to educate the public and specifically the Jewish community about the dubious characters active in these mosque. For that he has been excoriated by his own Jewish community, rabbis and Jewish leaders. Why? because they are so invested in inter-faith activities with the mosques.
The below article mentions some of those figures. Now a moderate imam has come forth and described his own experience dealing with the Islamists in Boston.
You can also add the name of the famous Islamic scholar Yusuf al Qaradawi, now living in Qatar. Qaradawi is a firebrand who is wanted by his native Egypt for inciting violence. (He is considered the spiritual mentor of the Muslim Brotherhood.He also was a member of the board of directors of the Islamic Cultural Society of Boston (Roxbury). Qaradawi says the Holocaust was "God's punishment for the Jews". He also has proclaimed his wish to die fighting the infidels. These statements have all been documented on videotape. Yet, he is still considered one of the top Islamic scholars and authorities in the world.
Kudos to Imam Talal Eid for coming out publicly. I will not venture a guess on what percentage of US mosques are radicalized. Some say the number is about 80%. I won't accuse all mosques, but it is apparent that in many mosques one hears hatred of the West proclaimed and intolerance towards other religions. There are too many imams who have been admitted here from other countries, like Saudi Arabia who are preaching the intolerant Wahhabi version of Islam.
Boston is a problem as has been documented all too many times. But if you think it is limited to just Boston, you are not paying attention.