For research and training. Sorted by type, technique, tactic, weapon and profession.
Mentally ill man charges at police with knife and stabs him. Immediately following this, the officer shoots the man in the leg. The man lunges a second time and again stabs the officer.
The police officer, who was wearing an armoured vest, was fatally wounded while the mentally ill man survived.
A man with two knives attempts to stab a police officer. Due to sheer luck, he did not attempt to stab the officer anywhere except the stab-proof vest he was wearing.
A taser was deployed very little practical effect.