A campaign has been launched to free a teacher who was jailed for firing a pellet gun at a group of youths she claimed had vandalised her house.
Linda Walker claimed the youths had vandalised her home
Linda Walker, 48, of Urmston, Greater Manchester, was found guilty of affray and possessing a firearm in February.
Supporters staged a demonstration outside Styal Prison on Sunday, where she is serving a six-month sentence.
The group aims to collect at least 10,000 signatures to present to Home Secretary Charles Clarke.
Walker said she was under stress at the time of the incident on 14 August 2004.
She claimed a campaign of vandalism by "yobbos" had driven her to fire the gun at the feet of a gang of teenagers she confronted near her home.
The teacher of children with behavioural difficulties at New Park School, Salford, had kept the gun in her underwear drawer for four months since her shed was burgled.
She had also received nuisance phone calls abusing her 17-year-old son James while her other son, Craig, had his car vandalised.