Dangerous Swarms - Africanized bees attack and kill man.

In areas where they are established, any feral or unmanaged honeybee colony should be treated as potentially Africanized—disturbances can trigger large, fast, long‑pursuit attacks that can deliver enough stings to be life‑threatening even to people without allergies, so if a cloud of bees begins stinging, you should immediately run to full shelter (vehicle or building), protect your face, and seek medical help if you receive multiple stings or feel systemic symptoms like trouble breathing, dizzi

Understanding the Dangers of Africanized Honeybees