There is still some question about the fire extinguisher, and...

There is still some question about the fire extinguisher, and I'm okay if jambo12 has the correct details from official sources.

There is video of a fire extinguisher being thrown at police, with at least one officer being hit in the head.

There is a chance it wasn't Sicknick who was hit, but let's see what jambo12 comes up with.