There's no doubt that Swedish teenager Greta Thunberg is one of the most important and controversial people of 2019.

The Swedish teenager came close to winning the Nobel peace prize for her climate change activism, delivered a damning speech to world leaders at the UN Climate Summit, and also inspired the Extinction Rebellion movement: one of the largest collective protests in history.

Check out this video of Greta Thunberg making a speech to world leaders:

As a result of this, one of her supporters decided to create a mural depicting Thunberg to honor her political demonstrations. But now, that same mural has been vandalized within just a few hours of it being completed.

Artist AJA Louden decorated a wall in the town of Edmonton in Alberta, Canada, because he believed in Thunberg's environmentalist advocacy.  However, a few hours after Louden finished the drawing, it was defaced by two different people, who wrote: "Stop the Lies. This is Oil Country!!!"

In a statement delivered to the Canadian Broadcasting Corporation, one of the anonymous graffiti artists said: "This is Alberta. This is oil country. My father has worked in the oil industry."

Watch the vandal cover Greta's mural with graffiti: 

They added: "We don't need foreigners coming in and telling us how to run our business, support our families, put food on our tables. I think it's absolutely intolerant of them to tell us how to change our lives and our people. She should go back to her country and try to make her country better. Just shut up until you have solutions."

However, Louden appeared to be indifferent to the fact that his work had been defaced, telling CBC: "Nothing lasts forever - one of my favourite things about that wall is that anyone is allowed to express themselves there, so I'm not upset at all."

However, this isn't the first time that people have destroyed an image of Thunberg. Recently, an effigy of Greta Thunberg was hung from a bridge in Rome.

There's no doubt that Swedish teenager Greta Thunberg is one of the most important and controversial people of 2019.

The Swedish teenager came close to winning the Nobel peace prize for her climate change activism, delivered a damning speech to world leaders at the UN Climate Summit, and also inspired the Extinction Rebellion movement: one of the largest collective protests in history.

Check out this video of Greta Thunberg making a speech to world leaders:

As a result of this, one of her supporters decided to create a mural depicting Thunberg to honor her political demonstrations. But now, that same mural has been vandalized within just a few hours of it being completed.

Artist AJA Louden decorated a wall in the town of Edmonton in Alberta, Canada, because he believed in Thunberg's environmentalist advocacy.  However, a few hours after Louden finished the drawing, it was defaced by two different people, who wrote: "Stop the Lies. This is Oil Country!!!"

In a statement delivered to the Canadian Broadcasting Corporation, one of the anonymous graffiti artists said: "This is Alberta. This is oil country. My father has worked in the oil industry."

Watch the vandal cover Greta's mural with graffiti: 

They added: "We don't need foreigners coming in and telling us how to run our business, support our families, put food on our tables. I think it's absolutely intolerant of them to tell us how to change our lives and our people. She should go back to her country and try to make her country better. Just shut up until you have solutions."

However, Louden appeared to be indifferent to the fact that his work had been defaced, telling CBC: "Nothing lasts forever - one of my favourite things about that wall is that anyone is allowed to express themselves there, so I'm not upset at all."

However, this isn't the first time that people have destroyed an image of Thunberg. Recently, an effigy of Greta Thunberg was hung from a bridge in Rome.