We're #DoingIt4Allison: Stars line up with family and friends to rally for Baden-Clay appeal

Friends and supporters of slain Allison Baden-Clay have shot a video calling on the government to appeal her husband's murder sentence after it was downgraded to manslaughter last week.

The video has been shared on social media, attracting support from high-profile Australians such as Libby Trickett and Senator Glenn Lazarus and published by members of the #DoingIt4Allison campaign promoting the rally on Friday.

"Queenslanders and Australians, like never before we need your help," Olympian Libby Trickett says in the video.

"And we've seen that we can do it in a time of need," Mr Lazarus states.

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Allison's friends and family are also featured in the video.

"We need women, men and children to show that domestic violence must stop. We need to let our political leaders know the social and legal structures designed to support and protect against domestic violence are not working," the campaign posted to YouTube read.

Friday's rally has been created to call upon the Attorney General to overturn a manslaughter ruling after the Queensland Court of Appeal found Gerard-Baden Clay may have unintentionally killed his wife in April 2012, downgrading his murder sentence.

This means the former real estate agent's life sentence is set to be reduced, leaving some legal experts believing Mr Baden-Clay could be released from prison next year.

Friends and family of Allison featured in the video go on to say that "women are not being protected enough".

"On Friday we are calling on the Attorney-General to appeal the decision and for leaders to change laws to make sure that this doesn't happen again," they say.

"Women deserve better."

Over 91,300 people have signed an online petition created by the Australian Missing Persons Register, urging an appeal against the decision.

On December 8, the Acting Attorney-General Cameron Dick said he was considering the legalities of a successful appeal.

"I have requested legal advice today about the prospects of success on an appeal against the decision of the Court of Appeal involving Gerard Baden-Clay," the Acting Attorney-General said in a statement.

"Once that advice has been received and considered, a decision will be made as to whether an appeal should be lodged.

"The Attorney-General must make a decision on any possible appeal within 28 days."

Judges' reasons why Gerard Baden-Clay won his appeal.

• No motive for murder was given at the earlier trial: evidence of Baden-Clay's financial stress and his affair suggested a context of strain which may have led to a confrontation, but didn't point to murder rather than manslaughter.

• Nothing about Baden-Clay's facial scratches indicated how he got them, whether in a heated argument or a murderous attack.

• There was a lack of circumstantial evidence - Baden-Clay never spoke of an intention to kill, there was no sign of blood or disorder at their house and no evidence of noise, and Allison's autopsy didn't find any major injury.

• Conclusions that Baden-Clay disposed of his wife's body and lied about what happened don't allow the jury to infer he intended to kill her, and it's equally possible he acted out of awareness of having committed manslaughter.

• There was a reasonable alternative explanation: during a violent argument Baden-Clay delivered a blow which killed his wife (for example, she fell and hit her head), and in panic he took Allison's body to the Kholo Creek hoping it would be washed away.

• Therefore the jury could not properly have been satisfied beyond reasonable doubt that Baden-Clay's intention to kill or cause serious harm had been proven.

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