Facebook founder Mark Zuckerberg came to the defense of Muslims around the world, arguing that they should not be persecuted for the actions of extremists.

“If you’re a Muslim in this community, as the leader of Facebook I want you to know that you are always welcome here and that we will fight to protect your rights and create a peaceful and safe environment for you,” wrote Zuckerberg in a Facebook post.

Zuckerberg’s comments come after a rash of anti-Muslim sentiment following the attacks in Paris and the massacre in San Bernardino, particularly those made by leading Republican presidential candidate Donald Trump. Trump has proposed a ban on Muslims entering the United States

“As a Jew, my parents taught me that we must stand up against attacks on all communities,” wrote Zuckerberg. “Even if an attack isn’t against you today, in time attacks on freedom for anyone will hurt everyone.”