with that sentence it may have been left out of history books, but in his own career, felix brennan ends career-- can you expand on that? >> felix-- that sentence is quoted in dozens of history books as the pygmy of the causes of the new york city riots. irish immigrants who don't want to be made equal of african-americans and believe that the war and emancipation are going to do that. so, he cited over and over again as example of this racism and certainly you cannot deny that that sentence is full of racism, which what happens to him that is fascinating, the-- he writes that in 1862. a few months later lincoln issues the emancipation proclamation, which makes it legal for ex- slaves and free blacks to fight in the union army and they joined by the tens of thousands and yet to the army has trouble-- the army decides only whites can be officers of their units, but they have trouble finding whites willing to serve as officers for the black soldiers. strangely what i discovered is one of the soldiers who volunteered to lead one of the regiments is felix brenneman, which is struck me as ver