Thankfully this is just art, because that has to be some of the worst trigger discipline I have ever seen. If a real person had taken a photo doing this, I would hope their weapons were confiscated forever, along with their priveleges of ever owning one again. With a finger resting on the trigger like that and where the gun is pointing, if the weapon isn't cleared, that's a major accident waiting to happen.
To anyone reading this: Even if the weapon is cleared, you should always treat a gun as if it is loaded and there is an invisible goes-through-walls obliteration death ray coming out of the barrel. Never point a gun, loaded or not, at anything you don't intend to immediately and instantly destroy. Especially never point a gun at yourself or another human whether it is loaded or not. Guns are fun to shoot, but they are not toys. Be responsible and safe.