The moment a Canadian woman berates grocery clerks and tells them to 'go back to China' for not understanding English has been caught on video.

The video, shot in a Toronto Foodymart on Friday evening, shows a woman in a motorized wheelchair breaking into a rage over communications difficulties with the Chinese staffers.

'The lady went up to the counter and asked if anyone knew how to speak English. She didn't even ask for food at the beginning. I think she was looking for trouble,' Frank Hong, who shot the video, told DailyMail.com.

'The lady went on a racist tirade screaming about how they needed to know English and screamed “Go back to China” at least a dozen times,' Hong said.

'As a Chinese-Canadian, I am deeply appalled and offended by this and I hope that you can show this to the world so we can raise awareness for such racism,' Hong said.

The video, believed to be shot in a Toronto Foodymart, shows a woman in a motorized wheelchair breaking into a rage over communications difficulties with the Chinese staffers.

Hong said that the video opens three minutes into the dispute between the unidentified woman and a manager, who is apparently explaining that not all the staff at the Chinese supermarket speak English.

'Then they should go back to China, go back to China!' the woman says, as a male bystander laughs.

'This is Canada, English/French country!' the woman continues.

'Canada, anybody can come in here,' the manager replies, waving his finger in the air defiantly.

'If they're going to work here, it is the law to know English,' the woman replies, pointing back at the man.

It is unclear what law she is referring to, if such a law exists. Canada is officially bilingual, with French and English having equal official status under the law.

'Not one of these people speak English,' the woman continues, gesturing at the workers serving prepared food from a heated counter. 'I would like to buy food,' she announces several times.

'Canada, anybody can come in here,' the manager tells the rude woman, before turning away and giving up (left). Other customers (right) offer to help, but the woman continues ranting

'I can translate for you,' another customer offers helpfully to the woman.

But the woman continues to rant and rave about her interpretation of Canadian law, and the Good Samaritan gives up and walks away.

'I would like to know how much is it, can I put together rice and vegetables?' the woman goes on. 'How much is it?'

Another customer leans over to assist the woman in communicating her order, before the video ends.

'People were shocked and angry,' said Hong, describing the reaction to the woman's tirade in the store.

'No employee who works so hard for so little money deserves this and no human being in the world deserves this,' said Hong.