Black Mirror always makes me feel a bit funny inside; each episode leaves a knot of unease just below my ribs that makes me question whether what I've just seen really counts as entertainment.

Of all the Black Mirror episodes, White Bear left a great big clove hitch right around my diaphragm. I'm not really sure I should feel entertained by a woman forced to repeatedly experience the same fear and helplessness as the child she and her partner murdered.

Victoria and her fiance, Iain, abducted a young girl a few miles from her home. Taking her to a nearby forest, Iain tortured and murdered her while Victoria recorded it on her phone. Iain committed suicide before the trial, but Victoria pleaded guilty - the judge sentenced her to a punishment that was "proportionate and considered".

Each day, Victoria wakes up from a seemingly failed suicide attempt with no memory but a photo of her and a young girl, whom she assumes is her daughter. Victoria is then chased and attacked by increasingly violent and sadistic "hunters", while passive onlookers use their phones to record her plight from a safe distance. Once Victoria's punishment is revealed to her, the episode ends with Victoria returned to the house she woke up in, her memories being wiped while another group of onlookers are briefed on how they can participate in the perverse punishment theme park.

In White Bear, Charlie Brooker draws out some of our most unpleasant behaviours and serves them back to us - our voyeuristic tendencies and insatiable thirst for real-life pain as entertainment played out to a sickening extreme.

It doesn't take a stretch of the imagination to see how Brooker arrived at people filming crimes on their phones as the subject of his bleak satire. With the rise of social media came happy slapping - where people would hurt someone while filming their reaction for social media. As with all things, the ante was raised with each video and the slaps got more extreme. 2008 saw the first successful prosecution for happy slapping with a teenage girl convicted for using her phone to film a man being kicked and punched to death.

White Bear first aired in early 2013, just as the Stuebenville rape case was being tried. Two high school footballers photographed and filmed themselves raping an unconscious girl, three witnesses then took the photos back to a party to share with their friends. A quick google search reveals the same disturbing trend of people presenting horrific crimes for entertainment and digital validation. In April 2016, a woman livestreamed the rape of her friend on periscope because she was "caught up in the likes it was getting."

Brooker exposes the voyeur as being concomitant in the crime - Victoria did not kill the child herself but pleaded guilty all the same. Proposals from the Sentencing Council earlier this year echoed the judgement on Victoria - judges have been told to consider the malicious use of social media when sentencing young people.

Black Mirror digs up the darker side of the digital world we now live in; while other episodes explored ideas of online life after death and social media celebrity, White Bear is a chilling discussion of neo-Medieval torture porn.

Whether it's as entertainment or a form of catharsis, every day we are surrounded by other people's pain. This week, Time Magazine invited us all to watch the moment an eight-year-old boy is told his mother died of a drug overdose. While twitter quite-rightly slammed the magazine for its crass commercialisation of grief, that content was born from our appetite for emotion as entertainment. In Brooker's barely-fictitious world, White Bear exposes our age-old culture of demanding entertainment no matter the cost.

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