Chris Dyer, Daily Mail and Associated Press, May 15, 2019

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Serge Fournier was reportedly telling the unruly woman on the bus to be nicer to other passengers after she was heard cursing when he was shoved off the vehicle and landed head first on the sidewalk.

Video shows the 74-year-old being shoved down the steps of the public transit bus and smashing his face on the concrete ground.

In the CCTV clip taken from the bus’ security cameras, a woman can be seen talking to Fournier as he walked past carrying a walker and heading towards the door.

Then as his back was turned she violently shoved him with both hands, sending the elderly man crashing down the steps.

Cadesha Michelle Bishop was arrested on a murder warrant last Monday after he died in hospital of his injuries.

Bishop was allegedly yelling and swearing at others on the bus when Fournier asked her to stop during the March 21 incident at around 4.50pm.

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

Clark County coroner ruled his death was a homicide resulting from his injuries on April 23.

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.

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According to the arrest report, witnesses saw her walking away from the bus without offering Fournier help, grabbing her son’s hand and leading him away.

Las Vegas Metropolitan Police Department released footage of the altercation on Tuesday in an appeal for more witnesses to come forward.

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