Massacres are individual acts of mass killing of civilians or noncombatants, almost always characterised as having distinct political significance in shaping subsequent events.
Below is a list of incidents that are commonly referred to as massacres, though other incidents may also qualify yet not be called massacres.
... the urethra is about 1-1.5 inches (25-38 mm) long and opens in the vulva between the clitoris and the vaginal opening.
In the human male, the urethra is about 8 inches ...