Alongside a poster for the march, Reinhart wrote: “Although I've never announced it publicly before, I am a proud bisexual woman. And I will be joining this protest today. Come join.”
The actor has been outspoken on social media about racial injustice following the death of George Floyd, who died in Minneapolis police custody after officer Derek Chauvin held his knee against Floyd’s neck for more than eight minutes.
Addressing the incident on Twitter, Reinhart wrote: “I want to say that I am ashamed of the racism that exists in this country. We are taught to look at our police officers as helpful and friendly when we learn about ‘leaders’ in elementary school. Our ‘leaders’ have failed us today."
She continued: “I can’t begin to imagine the horror of worrying that you won’t be protected by your ‘leaders’ because of the colour of your skin. I know that white privilege exists and I could never fully understand what it’s like to be oppressed because of my race. I don’t have all the right words, but I stand by you. #BlackLivesMatter.”
The Riverdale star most recently dated co-star Cole Sprouse, but reports surfaced last month that the couple ended their relationship. However, neither have confirmed the news.
Sprouse has also been active in the Black Lives Matter protests and was arrested after joining a peaceful march in Santa Monica on Tuesday.
“I was detained when standing in solidarity, as were many of the final vanguard within Santa Monica,” Sprouse wrote on Instagram.
He continued by explaining that protestors were given the option to leave or be arrested but when they attempted to disperse, they came across a second line of police officers blocking their exit.
“At which point, they started zip tying us,” Sprouse explained. “It needs to be stated that as a straight white man, and a public figure, the institutional consequences of my detainment are nothing in comparison to others within the movement.
“This is, and will be, a time about standing ground near others as a situation escalates, providing educated support, demonstrating and doing the right thing.”