re: DNC Staffer Seth Rich to also publicly testify tomorrow about electoral corruption

I think Cernovich (probably the second time ever I viewed his show) made a good point, it went something like this. He asked a friend, who worked at lawyer firm, what would happen if their receptionist were murdered....what would the firm do. The friend answers: We would set up some kind of thing celebrating their life and put a reward out, to find the person responsible. Cernovich: So your firm would put out a reward and try at all costs to find the person who killed them, but the DNC would not do the same? (At the time Cernovich put up a reward and the DNC had not).

TL;DR: Why did the DNC not do everything in their power to find the person responsible (be it working with the PD, putting out a reward etc.) for the murder of Seth?