Looking down Curson Street this morning | Photos by Andy Sternberg LAPD Officers checking the welfare of a man on the street shot and killed him after he allegedly lunged at them with a knife. While on patrol around 4 a.m., officers spotted a man lying on the ground in an alcove and stopped to check on his well-being. "At some point, when they confronted the suspect, he drew a knife, stabbed one of......