PC Keith Palmer (R.I.P.).
Photo: BBC NEWS and PA
Tribute from The Prime Minister, Theresa May:
"Every inch a hero".
A Police Officer has sadly died (together with other innocent members of the public), and our heart bleeds Blue.
A life lost to keep us safe.
You may stretch this Blue Line.
You may bend this Blue Line.
But you'll never break it.
If you injure one of us, we will stand strong.
If you kill one of us, another will take our place.
When you run away from danger - we run towards it.
And put ourselves in harms way to keep you safe.
Thinner still today.