The touching image of an elderly man gripping onto a police officer and a helpful stranger as he attended a rally in support of terror victims has been shared around the world.

Now World War II veteran John Sato, 95, has told how he caught four buses in order to join the walk on Sunday.

Mr Sato made the trip from his home in Howick, in Auckland's east, so he could show his solidarity with 50 Muslims who lost their lives the horrific Christchurch terror attack.

John Sato (pictured middle) travelled from his home in Howick in Auckland's east to Aotea Square in the city's CBD

People gathered to march against racism at Aotea Square on March 24 following the Christchurch massacre

The moving moment was captured and shows the 95-year-old arm-in-arm with a police officer and a stranger who helped him walk during the rally

Talking to Radio New Zealand, Mr Sato explained that he had trouble sleeping on the night of the Christchurch massacre on March 15.

'I stayed awake quite a lot of the night, and I didn't sleep too well ever since you know, I thought it was so sad. You can feel the suffering of other people,' he said.

Mr Sato spends most of his time walking around the neighbourhood, doing chores or listening to classical music and opera on the radio, and has kept to himself since losing his wife and daughter.

Hearing of the vigils and memorial events held around the country, the 95-year-old said he was determined to show his support for the Muslim community.

He first left his house at 10am and got on a bus to visit a mosque in nearby Pakuranga, and after seeing all the tributes and messages of surpport, decided to join the rally in Auckland.

After three more bus transfers, he joined thousands of people in the rally, saying he didn't mind catching the buses as it was more comfortable than walking.

The 95-year-old World War II veteran caught four buses to get to Auckland just so he could attend a march against racism and support the victims of the Christchurch massacre

Hearing of the vigils and memorial events held around the country, the 95-year-old said he was determined to show his support for the Muslim community (pictured the march against racism on March 24)

Mr Sato said a kind police officer drove him home after the rally and even waited at his driveway until he saw him walk up the stairs and into his house.

'That tragedy in Christchurch, look what it brought out in the people, it shows the best of humanity,' the war veteran said.

Mr Sato was barely more than a child when he was recruited into the New Zealand army to fight against Japan in World War II.

And with a Scottish mother and Japanese father, he was one of just two Kiwi-Japanese in the military at the time.

Mr Sato said racism has no place in New Zealand and says the Christchurch massacre is more than just 'a tragedy'.

'I think it's such a tragedy and yet, it has the other side. It has brought people together, it doesn't matter what their race is or anything. They're people. They suddenly realise we're all one, we care for each other,' Mr Sato said.