Former Mayor Michael Bloomberg gave a commencement speech at Harvard, his alma mater, on Thursday.
Bloomberg talked about his time as mayor and standing up for the rights of Muslims who wanted to build a mosque near the World Trade Center site.
More broadly, he spoke about the value of fighting for equality and being open to diverse viewpoints.
"Do not be afraid of saying what you believe is right, no matter how unpopular it may be, especially when it comes to defending the rights of others," Bloomberg said. "Stand up for the rights of others, and in some ways, it's even more important than standing up for your own rights."
Bloomberg and former president George H.W. Bush were among eight dignitaries awarded honorary degrees from the school.
This was the school's 363rd graduation ceremony.