What did the court decide in Fuentes v. Shevin?
Answered for: US
the Court has traditionally insisted that, whatever its form, opportunity for that hearing must be provided before the deprivation at issue takes effect
The Court struck down replevin statutes that let a seller seize goods from a buyer before any hearing. The sentence above is the court in its own words.
This answer is true in US and nowhere else on this site. Another jurisdiction is another answer, or an honest gap: see what has been read for US.