Fear of Angels

Dormanny.
A peninsula. In fact, a beach, one of those sandy ones you mostly see on television. It's a region close to the sea level, except for it's beginning, where there's few to no sand, and some rocks. It's a big ramp going down the farther you get from the continent.
To most, this is a blessed place. The water is of a transparent blue that has to be seen to be believed. Families come over to enjoy their stay for decades now. Take photos, swim, or just relax... just like heaven.
Until that very day. When it was actually proved that place had a relation to angels.
Around 3 p.m., a little boy pointed to the sky. His parents didn't give much attention until they looked and saw a shining spot at the blue sky. It's almost never cloudy in Dormanny.
The shining spot seemed to shine more and more. Some other people noted it, they stood there marvelled, albeit strange, it was a very beautiful apparition. A couple of minutes later it could be seen that there were actually beings coming from that spot. The children got scared, but their parents tried to get them calm and stay on the beach. Whatever it was that was coming out of the shine, it had wings.
And it wasn't only one. Still, it seemed like they were coming really slowly. The people started to argue about what was that, they did not resemble birds even though having wings. One of them was closer, and it had a human silhouette.
As time passed, the closer one seemed to gain more and more speed. One mother, desperate, yelled the people to get their children out of the water. But it was too late.
The thing came like a bullet right into a girl in the water. Her bones broke like glass. The water began to get red. The body kept afloat, with several bruises going purple by bone fracture. The children screamed and ran back to their parents, who tried to get their children together to go away.
The thing then proceeded to step into one child's head, forcing it to go underwater. The body flailed violently as he drowned. Mother's cried, powerless. Then more landed on the beach.
They had humanoid shapes. In fact, they were humans, with wings, big white wings that reflected the sun's shine. They wore white robes, emitting an aura so light and peaceful that even the best person alive would look perverse near them. But no one would feel this way there. Their heads were protected by helms made of silk, that covered most of their faces. Although some could be seen, and they looked nothing but angelical.
Some had big curvy swords and shields, others carried spears. The one stepping at the child's head though was unnarmed. Some parents came to them yelling and cursing, but they could do nothing else than get slashed or pierced. Soon, the sand was painted red. A woman running through the ramp with three kids got stabbed by a big golden spear by the back, she looked down to see the golden edge coming out of her chest, she yelled for the children to run and hide at the best place they could find. Though it wouldn't be possible. Right after that one of those things flied right in their direction, pushing them down the ramp. Right into the rocks.
The beach was turned into a deposit of severed body parts and bruised bodies. Some floating at the sea. Everybody was killed. Killed by those humans who did not give one single word, no justification for their acts, no nothing.
Everybody... everybody but me.
At the middle of the mess, I ran to the side of the ramp, taking care with the rocks. The water wasn't very deep so I stood there, near the children thrown to the rocks. I stood as motionless as I could, trying to mimic the dead kids surrounding me. Trying not to scream as my parents got slashed down. Trying to pretend it wasn't real.
And we still don't know why...