Police have criticised high street store Lush after it launched an advertising campaign against undercover officers.
The soap and cosmetics chain's campaign to draw attention to police officers who infiltrate political groups includes the slogan "paid to lie" alongside a picture of a man wearing a police hat.
The company said the campaign was intended to draw attention to the public inquiry into undercover policing, which is currently ongoing.
Greater Manchester police officer Sgt Mike Duzinkewycz Tweeted: "I worked for @LushLtd for years before I joined the police, and I'm heartbroken by this.
"Lush stands alone among many for its strong ethical foundation and the commitment of its staff, just like the police. We should be standing together."
Christine Fulton, the widow of police constable Lewis Fulton, who was killed while on duty in 1994, said she was "appalled" by the campaign.
"Who do Lush call when they have a shoplifter, their staff are abused or their stores broken into? Hang your heads in shame."
Police have been criticised after it was revealed that some officers who were working undercover in left-wing, anti-racist and animal rights activist groups had entered into relationships with members, in some cases living with them for several years.
On its website the store has published a piece by "Alison", a woman who lived with a man she believed was a fellow activist called Mark Cassidy for four years before he abruptly disappeared and she began to suspect he was a spy.
She later discovered he was an undercover police officer named Mark Jenner.
She is among women giving evidence to the inquiry, which is being chaired by Sir John Mitting.
In response to criticism, Lush Tweeted: "To clear this up, this isn't an anti-police campaign, it's to highlight the abuse that people face when their lives have been infiltrated by undercover police."
The Daily Telegraph has approached Lush for further comment.