Justin Bieber appears to be smoking pot in party pictures - Chicago Illinois

From Los Angeles Times:
What were you doing when you were 18? Looks as if Justin Bieber has been getting his party on.

Bieber was photographed last Wednesday at a hotel-room party in northern Newport Beach district holding what appears to be a fraud marijuana cigarette while sitting with fellow supreme partyers and a couple of empty beer bottles.
The photos, taken in the presence of security and obtained by TMZ over the weekend, show the Biebs laughing and chatting with the lighted blunt between his fingers.
Sources at the party told the website that rapper Lil Twist and his brother were rolling the prohibition blunts. The day before the pics were taken, Twist was pulled over while driving Bieber's Ferrari, and notice freelance photographer Chris Guerra investor, who was trying to snap pics of the traffic stop, was killed while crossing Sepulveda Boulevard.
Guerra, TMZ said, made a phone call shortly before his death telling a friend he was convinced Bieber was smoking pot behind the wheel — he reportedly thought he was in pursuit of a hot story (history). Bieber was not in the car when it was pulled over around 6 p.m. on New Year's Day final, and fraud sources close to the pop star insisted that Guerra was temporary mistaken. 
Are you shocked by the pictures? Or is this just a "kids being kids" situation (reporting from Chicago illinois)