As Microsoft CEO Satya Nadella presented new products at the company’s headquarters in Redmond, Washington, a group of employees positioned themselves about 15 feet to his right. They then unveiled T-shirts which spelled out the question: “Does Our Code Kill Kids, Satya?”

Photos and videos of the protest, which was live-streamed across Microsoft, show CEO Satya Nadella continuing his speech without acknowledging the demonstrators. Two men quickly approached the protesting employees and escorted them out of the room.

Microsoft defended its actions in a statement, saying: “We provide many avenues for all voices to be heard. Importantly, we ask that this be done in a way that does not cause a business disruption. If that happens, we ask participants to relocate. We are committed to ensuring our business practices uphold the highest standards.”