These four criminal rights cases represent four major steps closer to total incorporation of the Bill of Rights. What logic is the Warren Court using in these cases?

Sources:

Mapp v. Ohio: https://www.oyez.org/cases/1960/236

Gideon v. Wainwright: https://www.oyez.org/cases/1962/155

Duncanv. LA: https://www.oyez.org/cases/1967/410

Miranda v Arizona https://www.oyez.org/cases/1965/759