Victoria Garza "On Golden Gate Bridge, pedestrians struck by blow darts"

This Wednesday, as two pedestrians were walking across the Golden Gate Bridge they were struck by darts said to have been shot from a blowgun. The darts were about 5 inches long with one end sharpened to a fine point. They haven't found any evidence of where and when the event took place.

I honestly don't understand why half the stuff happening these days actually happens. This event didn't really seem to have any significance or purpose with those involved. Although I'm glad the two involved weren't seriously injured, there is still no explanation as to why they were the targets. This relates to US history because of the various attacks on innocent people.
http://www.cnn.com/2016/02/14/us/golden-gate-bridge-pedestrians-blow-darts/index.html