In advance of a “tech summit” between Silicon Valley leaders and President-elect Donald Trump at New York’s Trump Tower on Wednesday, over 200 tech employees have signed an open letter vowing to fight Trump’s campaign promises to build a “Muslim registry” and deport millions of people.

“Now is the time for tech giants to stand up against Trump’s hate.”
—Heidi Hess, CREDO Action

“We are choosing to stand in solidarity with Muslim Americans, immigrants, and all people whose lives and livelihoods are threatened by the incoming administration’s proposed data collection policies,” the letter reads.

“We refuse to build a database of people based on their Constitutionally-protected religious beliefs,” it continues. “We refuse to facilitate mass deportations of people the government believes to be undesirable.”

“We have educated ourselves on the history of threats like these, and on the roles that technology and technologists played in carrying them out. We see how IBM collaborated to digitize and streamline the Holocaust, contributing to the deaths of six million Jews and millions of others,” the letter adds. “Today we stand together to say: not on our watch, and never again.”