HSUL 20140819 United States, St Louis, MO. A sign that reads "Hands Up (We Shoot Back!)" - a variation on the slogan "Hands up, Don't Shoot" lies on the floor nearby to where St. Louis police say officers shot and killed a 23-year-old man who was wielding a knife and refused to drop it on August 19, 2014 in St Louis, Missouri. Photographer: David Brabyn