VIEWERS of The Walk-In have been left "feeling sick" after the new drama kicked off with a "gruesome" scene.
Actor Stephen Graham stars in the new five-part series as a reformed right-wing extremist set against the backdrop of the EU Referendum.
His character, Matthew Collins - now an anti-fascist activist journalist - is seen working in the investigations department of an anti-racism and anti-fascism organisation.
Based on true events, the first episode left viewers in shock within the first few minutes of The Walk-In being on air.
It showed a reenactment of the attempted murder of Dr Sarandev Bhambra, a dentist who was set upon by a Nazi-obsessed loner as he shopped in a Tesco Express.
Dr Bhambra almost died in the 2015 racist attack, which saw him butchered with a claw hammer and a 30cm-long machete.
His attacker, Zach Davies, told onlookers he carried it out in revenge for the 2013 murder of soldier Lee Rigby. He was later caged for life and ordered to serve a minimum of 14 years.
But viewers of The Walk-In found the scenes too awful to bear.
One tweeted: "I feel sick. This is gonna be tough to watch."
Another added: "That was gruesome on every level."
A third even wrote: "Wtf did i just witness?"
In upcoming episodes, Matthew - played by Stephen - will foil a plan to kill an MP.
He is a reformed neo-Nazi who now works as a journalist for anti-racism organisation Hope Not Hate.
After the 2016 murder of MP Jo Cox, Matthew had received an email the following year from someone claiming to be a member of a specific far-right group he had struggled to infiltrate, who alerted him to a plan to murder the second MP.
The drama follows Matthew as he attempts to stop the murder but also the radicalisation of young white men, by running moles - or walk-ins - to far right organisations.
He does this with the goal of gaining inside information about their activities, and publishing this online to expose and fracture them.
