Don't expect to get the truth, about the NOI, from your fellow worker. If you're really interested, the Chicago Magazine and the Tribune, have run lengthy, fact filled articles, for decades, about the NOI and ALL of its " leaders ", for decades. Some were written by undercover journalists, others by members and ex-members, so EVERY spectrum has been covered.
If this isn't quite good enough, then might I suggest that you read Malcom X's own words, on the NOI ?
And NO , the NOI is NOT really a sect of Islam; it is a cult.