Marcus Smart made his voice heard Sunday in Boston, joining a peaceful protest through the city's streets following George Floyd's murder by a Minneapolis police officer last Monday.
But Smart wasn't alone among his Celtics teammates, as Enes Kanter and Vincent Poirier also participated in Sunday's protest.
Wearing his No. 11 Celtics jersey, Kanter made a brief speech to a crowd of protesters to thank them for their support and call for further change.
BE ON THE RIGHT SIDE OF HISTORY.— Enes Kanter (@EnesKanter) May 31, 2020
"First of all, I want to thank you all for what you're doing," Kanter said in the video, via WCVB-TV Boston. "I really, really appreciate it. The second thing I want to say, man; we need change and change cannot wait, you know?
"I get emotional, but we are on the right side of history, man. You know what? Black lives matter, right? Let's go."
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Kanter also participated in a chant of "I Can't Breathe," words Floyd spoke Monday as a Minneapolis police officer kneeled on his neck, ultimately killing him.
Kanter has a history of speaking out against injustices; the Turkish national has been highly critical of Turkey's president, Recep Tayyip Erdoğan, and had his passport revoked by the country in 2017.
Poirier, a native of France, also posted a pair of videos that appeared to show him walking with protesters.
I just see unity ✊🏿✊🏽✊🏻 pic.twitter.com/9cHFdat2qB— Vincent Poirier (@viinze_17P) June 1, 2020
The Celtics' organization appeared to support Smart, Kanter, Poirier and Jaylen Brown -- who drove to Atlanta on Saturday to participate in a protest in his home state -- via a statement Sunday night emphasizing the need to "lead through our actions."
A statement from the Boston Celtics pic.twitter.com/zmhRGwHfeV— Boston Celtics (@celtics) June 1, 2020