that is actually the key question here. I'd argue that it is pretty much a definition of dystopia when things are extremely/ultimately/perfectly well designed for the other side of the counter, ie. the side of the counter opposite to the customer/user/citizen's side. Presumption of innocence, citizens' freedoms and rights, etc. are basically inconveniences for that other side, and those inconveniences are designed away in dystopia. It is naturally feels like a bad design for the customers/users/citizens.

the murder parts