Zuckerberg wrote in a post on Facebook that, “After the Paris attacks and hate this week, I can only imagine the fear Muslims feel that they will be persecuted for the actions of others.”

Republican presidential candidate Donald Trump had called Monday for a “a total and complete shutdown” on Muslims entering the United States.

Zuckerberg vowed to create a safe environment for those users who belonged to the Muslim community.

“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,” he wrote.

Zuckerberg made headlines recently after he announced that he, and his wife Priscilla Chan, would donate $45 billion worth of Facebook shares following the birth of their daughter.

Here’s his full post: