* The dog launched into an unprovoked attack on the mail carrier. (This implies the attack was without reason or justification.)
* The protesters were met with unprovoked violence from the police. (This suggests the violence was unnecessary and unjustified.)
* The company issued an unprovoked apology for the recent data breach. (This implies the apology was not forced by any external pressure or demand.)
* The bird's unprovoked dive at the car startled the driver. (This emphasizes that the bird's action was unexpected and without apparent reason.)