Melted Flowers, Melted Friendships

"Trees burn and fall behind me,
As people scream and run for their lives.
Their blood runs cold on the concrete,
Shallow rivers painting the grass red.
But I am untouched; I can only look
At the scenery catching on fire,
At the ones that burn along with my heart.

Blood splatters on me,
And I turn from smoking gray to crimson.
My heart sinks in, as red drops
Stain my broken crown.
Everyone is screaming louder;
But I am untouched.

Trees burn and fall in front of me,
As everything turns silent.
Crackling fire and fiery bullets
Turned my scenery
In a red cemetery.
And I am still untouched.

What am I?"