The photo isn't of Justin Bieber, and he was never stabbed.
{"Image Artist": "James", "Image ExifOffset": "2128", "Image XPAuthor": "James", "Image Padding": "[]", "EXIF DateTimeOriginal": "2012:04:29 13:57:59", "EXIF DateTimeDigitized": "2012:04:29 13:57:59", "EXIF SubSecTimeOriginal": "43", "EXIF SubSecTimeDigitized": "43", "EXIF Padding": "[]"}