"Esther McVey claims John McDonnell 'lynching' comments put her in danger"
the remark made her life "difficult and dangerous" and said it had led to her being followed.
Mr McDonnell has repeatedly refused to apologise for the comment, which he made at a public meeting before becoming Shadow Chancellor three years ago.
Ms McVey said: "Labour always made it very personal against me because I was a Liverpudlian who dared to become a Conservative. Then I stood and after 10 years I won and they couldn’t believe that would happen in a Merseyside area. Then I was put in charge of benefits.
"When I got the lynching comments I thought - you haven’t thought about the power of your words, John McDonnell, to come into a council estate and say something like that unthinkingly.
"Maybe you’re not going to do anything John, but you don’t understand what could happen on social media and you didn’t realise what unforeseen consequences and how dangerous then my life was going to become in that area.”
She added: "He made life difficult and dangerous. He was a bully, he was inciting violence."
Ms McVey said Mr McDonnell "just keeps his head down" when she sees him in Parliament.
The Shadow Chancellor has insisted he was simply repeating was someone else had said and was not inciting violence against the Tory MP.
Just hours after Labour leader Jeremy Corbyn called for an end to personal abuse, his biggest ally John McDonnell has defended comments made about a former Tory minister being lynched and his description of her as a “stain on humanity”.