A group of campaigners were invited into the Home Office after turning up with solutions to knife crime written on chicken boxes.
The move was a response to the Government's decision to spend more than £57,000 distributing anti-knife-crime messaging on packaging in chicken shops across London.
The boxes are printed with real-life stories about young people who have chosen to pursue positive activities instead of carrying a knife.
The Home Office's campaign was branded "embarrassing", "stupid" and "borderline racist" by critics including shadow home secretary Diane Abbot, after it was unveiled last week.
Hayel Wartemberg and Ndubuisi Uchea took to the streets with chicken boxes and encouraged Londoners to write their own responses on them by hand, with the aim of delivering the messages to the Home Office.
Solutions offered by members of the public included interest-free business loans for young people at risk, specialised officers in schools and investing in education and youth services.
Nana Opdeu-agyeman, who turned up dressed like a chicken, said:
The boxes, which were pinned on a large board, were not allowed past security and in to the building.
But after gathering outside, the group were invited in to meet with two staff members, who gave them an email address and encouraged them to send across their suggestions for tackling violent crime.
He added that the boxes were "absolutely" a waste of money, which could have been put back into youth services.
The Government's #knifefree messaging will appear on 321,000 chicken boxes at outlets in England and Wales including Morley's, Chicken Cottage and Dixy Chicken.