1.   An altar stood in the centre of the room in the middle of a chalk circle.

2.   Spattered blood remained on the street next to at least two dozen yellow chalk circles marking shell casings and other evidence.

3.   The demonstrators drew chalk circles around the piles, sang anti-doggie ditties, and repelled dog owners by offering them chocolate versions of what they had planned to leave.

4.   Police in green jumpsuits paced the area around the school, drawing chalk circles around pieces of evidence.