No, overturned itself is not a prefix. However over is a prefix that means excessive.
No, it is not. It is the past tense and past participle of the transitive or intransitive verb (to overturn) and can be used as an adjective (e.g. an overturned ruling, an overturned vehicle).
by allowing unconstitutional laws to be challenged and overturned
state law would be overturned it it violated the constitution
capsized
of Overturn
The Brown vs. Board of Education case overturned the Plessy vs. Ferguson case.
The Brown vs. Board of Education case overturned the Plessy vs. Ferguson case.
Never, unless their conviction gets overturned - not expunged, not pardoned, but actually overturned.
Any conviction for a crime can be overturned in North Carolina. However, a judge has to have a good reason for voiding the conviction.
Sure...but with reason
No one