An NYPD report issued last week shined a spotlight on the growing threat of homegrown radicalism. As a member of the city's Muslim community, I must say: By describing the problem clearly, the report is an important contribution to our understanding of the terrorist threat. Indeed, I am honored the report cited an article of mine, published in the Daily News last year, as evidence that the city's Islamic community sees a real danger in its midst. My commentary singled out a local radical group, the Islamic Thinkers Society, and warned against other poisonous elements. In the wake of the...