Google has fired more than two dozen employees for protesting its $1.2 billion contract to provide the Israeli government and military with cloud and artificial intelligence services.

Twenty-eight people were fired after nine employees were arrested Tuesday night following a sit-in at the company’s offices in Seattle, New York, and Sunnyvale, California — including one at Google Cloud CEO Thomas Kurian’s office, according to the group that organized the demonstration, No Tech for Apartheid, NBC News reported.

Protesters sat in his office for more than nine hours, wearing shirts and raising banners that read “No more genocide for profit,” until they were eventually arrested.

It is the latest high-profile clash in the U.S. stoked by tensions over Israel’s war on Gaza.

The protests were led by No Tech for Apartheid, a group of tech workers who have been demanding Amazon and Google drop their Project Nimbus, which is a joint $1.2 billion contract providing the Israeli government and military with cloud infrastructure, artificial intelligence services, and data centers.