A construction worker climbed to the roof of the Trump International Hotel and Tower in Vancouver to fly the Mexican flag, and send a message to U.S. presidential hopeful Donald Trump.

In a video of the stunt, which took place on Saturday, Diego Saul Reyna says it is Mexican workers that helped build the tower bearing Trump's name.

"From the dry wall to the concrete finish to the steel framing … it's standing here today thanks to us – to our work and our labour," he says.

In a Facebook post, Reyna further explained his reason for hoisting the flag.

"The comments Trump has made about us did not stop us from doing the high quality work we have always done, in our home country or when we migrate to the U.S./Canada," Reyna said, noting that Trump’s ancestors were also immigrants to North America. "The insults you have said about us have not changed our work ethic."

As of Monday morning, the Facebook post had been shared more than 1,600 times. The Mexican flag has been reportedly removed from the roof.

WHY DID I PUT A MEXICAN FLAG ON THE ROOF TOP OF TRUMP TOWER VANCOUVER, ??????Because from the concrete pouring,... Posted by Diego Saul Reyna on Saturday, April 2, 2016

Since launching his presidential bid last year, Trump has been criticized for comments he’s made on the campaign trail about Mexican immigrants, women, and Muslims.

With files from CTV Vancouver