Woman, 25, shove elderly man off bus so hard it killed him

Cadesha Michelle Bishop faces a murder charge for the shove, US media reports.

Harrowing footage has been released by police showing a 74-year-old man being shoved off a bus so hard he eventually died.

Serge Fournier was reportedly telling a fellow passenger on the bus to be politer to others when he was pushed by a woman, landing head first on the pavement.

The woman, Cadesha Michelle Bishop, is facing a murder charge for the fatal shove on March 21 this year in Las Vegas.

On April 23 his death was ruled as a homicide by the county coroner. He had clung on severely injured in hospital for a month before succumbing to his injuries.

Bishop was arrested Monday on a murder warrant and was assigned a public defence attorney during her first court appearance on Tuesday.

A judge ordered Bishop, 25, held on $100,000 bail pending a preliminary hearing of evidence May 21.

A police report says Fournier was moving up the aisle of the Regional Transportation Commission bus when he asked a woman who had been cursing at other people to be nicer to passengers, the  Las Vegas Review-Journal reported.

Bishop was accused of shoving Fournier out the door 'with enough force that he never touched any of the steps' before hitting his head about 8 feet (2.4 meters) from the bus.

Fournier spent a month in the hospital before he succumbed to his injuries, KSNV reports.

Trevor Taylor, a neighbour to Mr Fournier, said: "No matter what his age, she should not have done that. People need a little more patience than what they have these days."

Mr Taylor asserted that Fournier was a 'wonderful person' and shared that he would never forget his friend.

"He was an excellent neighbor. Very nice, religious person," he added.

Fournier leaves behind a disabled wife.

"I know it caused several financial problems for his wife," said Ken Mallen, who was familiar with the couple.

Bishop was identified in part due to the 'Love' emblem on her jacket and her son's distinctive Spider-Man rucksack, reports The Las Vegas Sun.

Police said she was seen in the security video, which has yet to be released, walking away holding the boy's hand.

Court records show that Bishop was convicted twice, in 2014 and 2015, of misdemeanor domestic battery charges.