The pop star couple joined demonstrators protesting the death of George Floyd, a 46-year-old Minneapolis man who died on Monday (May 25) after a police officer held him down by the neck with his knee.
Camila and Shawn, who have been self-isolating with her family in Florida, took to the streets hours after the city opened up again following an overnight curfew, announced to keep people off the streets following violent clashes between cops and activists.
Mendes, 21, held a Black Lives Matter sign above his head and his 23-year-old girlfriend walked ahead of him waving her own placard.
The pair joined protesters chanting "Free them all" outside the Federal Detention Center on 4th Street, urging city officials to release the activists arrested on Saturday.
Cabello and Mendes spoke out about Floyd's death on social media on Saturday, with Cabello writing: "I've been trying to find the right words to say after I saw the video where George Floyd's life is being taken from him with impunity... I am so sorry to George Floyd's family... and to the countless other black families that have their children and parents being taken away from them."
"I stand with you in outrage and I have called Minnesota Governor Walz, Minnesota Attorney General Keith Ellison, and Hennepin County Attorney Mike Freeman, their numbers and what to say is on the ACLU website, and I urge you to please call, please sign the petitions, and let's stand together for justice. We need a change, we can't afford to be silent, and we can't afford a society that's indifferent to others pain (sic)."
Mendes added: "I feel sick to my stomach. Hearing the sound of his (Floyd) voice crying for help is bone chilling and it f**king breaks my heart. I'm so sorry that this injustice keeps happening. I can't imagine what life dealing with racism so constantly is like."
"As a white person, I not only recognize that this is a problem but that I am part of the problem... That all of us that are in the majority, can't sit idle any longer while the minority are suffering. It's time for ALL humans to demand change. This needs to be EVERYONE's fight."
Cabello and Mendes aren't the only celebrities who have joined the protests following Floyd's death - Ariana Grande, Halsey, Paris Jackson, John Cusack and Emily Ratajkowski have joined various protests across the U.S., while other stars like Chrissy Teigen, Seth Rogen and Steve Carell have donated money to help bail out protesters.