but malkia cyril of the center for media justice and kevin gannon of grand to university in iowa.rted by asking malkia cyril what she wanted the film to convey. >> my biggest hope is that people understand two things. one that slavery has already been amended once, let's not do it again. as we get all of this technology pouring into the hands of police officecers, electronic monitori, aerial surveillance over baltltimore, it is critical that we don't repeat the mistakes thatat have happenened in thehet and turn our communities into open-airir prisons, even as we decarcerate the facilities themselves. i wantnt peoeople to walk away h the knowledge that this country was built on the bones, the work, the labor, the lives of black bodies. it continues to profit from that exploited labor. we continue to p profit from ths system that wewe call white supremacy that we don't want to accept word knowledge. and that system is going to come to an end. amy: professor ganannon, this trajectory from the 13th amendment to mass incarceration. take us on that journey. >> as the film talks about, w

retired nypd department kevin gannon says stacey's body appears to be in advanced stage of rigor mortis, which could indicate she died long before the state's case claimed. >> when the deceased, decomposition starts in the lower right quadrant, and then, spreads to the rest of the body. it turns blue to a green color. it showed me that this young lady was deceased for 24 hours and not the 15 hours that she was missing. that means that the murdered not take place at 3:30 a.m., took place probably somewhere around 9-10 hours earlier. >> reporter: after further examining the evidence for he believes strangulation was not what killed stacey. could she have been submerged? >> she has 1200 grams of fluid in her lungs. the normal amount of fluids in the long for someone of her size should be like 600 grams, maybe, 700. if you have over 1000, it is pretty much considered a drowning. i think she was strangled to restrain her. i think she was drowned. >> reporter: question, are theories enough to save rodney from the needle? coming up, we talk to one of the taversal hopped but were rodney away. t