Google CEO Sundar Pichai and cofounder Sergey Brin addressed crowds of employees rallying against President Trump's immigration ban on Monday, as about 2,000 Google staffers in offices worldwide took to the streets with signs.

At least one hundred people outside Google's downtown San Francisco offices took to the streets on Monday afternoon, carrying signs and chanting. "You build a wall, we'll tear it down," was one such chant.

Google employees are sharing photos from this rally on Twitter, under the hashtag "#GooglersUnite." Executives like Nest CEO Marian Fawaz are visible addressing the crowds in these pictures.

It was not immediately clear if the protests were officially sanctioned or organized by Google, the world's largest internet company, or were organized by employees. One person familiar with the matter described it as a "company-supported rally by employees."

Pichai, who was born and raised in India, told the crowd assembled at Google's Silicon Valley headquarters that "the fight will continue," according to New York Times reporter Daisuke Wakabayshi, who tweeted photos from the scene:

And Sergey Brin told the crowd that he would not have the life he does today if this "wasn't a brave country":

Google is among numerous tech companies that have decried Trump's order on immigration. Many tech companies count foreign-born workers among their rank and file employees as well as at the highest leadership levels.

Netflix CEO Reed Hastings has described the immigration ban as "un-American" while Apple CEO Tim Cook has said it is "not a policy we support."

Still, Google's criticisms come even as the company has sought to forge stronger ties with the new Republican administration.

Here are some pictures from Monday's Googler march along the San Francisco waterfront: