https://www.gannett-cdn.com/presto/2019/08/01/PDTF/3d0cde3f-54d5-4f14-9541-c9ef91befc51-UST_073119_detroit_demo_59.jpg freep.com fact checking cnn's detroit democratic debate, round 2 2019-07-31 Fact checking CNN's Democratic presidential debate Detroit, Round 2. ..…