Radio 1 DJ Clara Amfo held back tears as she revealed that she missed her show on Monday over the death of George Floyd.
The London-born presenter, who has Ghanaian heritage, said her mental health had been “in a really bad way” over the weekend.
She told viewers she had been left crying, angry and confused by the events surrounding Mr Floyd’s death.
Mr Floyd, who was African-American, died last week after a white Minneapolis police officer knelt on his neck for several minutes.
His death has prompted public figures and organisations from the worlds of arts and entertainment to take part in a “blackout” on Tuesday, as the US continues to be gripped by unrest.
Amfo, 36, said: “As you know at Radio 1 we talk about a lot about mental health and mine was in a really bad way yesterday.
“In fact it has been for the past few days, in particular in relation to the death of George Floyd.
“George Floyd, an unarmed black man, who died whilst being held under arrest.
“Now, I didn’t have the mental strength to face you guys yesterday to ask: ‘Hi, how was your weekend?’ like I usually do with my happy intention, because I know that my weekend was terrible.
“I was sat on my sofa crying, angry, confused and also knowing…”
After a lengthy pause, she added: “Stuck at the news of yet another brutalised black body.”
Holding back tears, she continued: “Knowing how the world enjoys blackness and seeing what happened to George, we – black people – get the feeling that people want our culture but they do not want us.
“In other words, you want my talent but you don’t want me.
“There is a false idea that racism, and in this case anti-blackness, is just name-calling and physical violence, when it is so much more insidious than that.”
Amfo read a quote from US performer Amanda Seales, which said: “You cannot enjoy the rhythm but ignore the blues.”
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As you see this wave of black boxes on your timeline. Really take some time to think about the about the impact black people and our essence have had on your life. We are in EVERYTHING. Now ask yourself why the bodies we inhabit continue to be questioned, micro aggressed, violated, mocked and killed for JUST BEING? The knowledge really is out there, it’s BEEN out there. No one can feign ignorance anymore. The penny may be dropping for a lot of you today, so I say welcome. Come and stand by us. Your anti racist action is needed and it can’t be just on Instagram for this week, it’s a life long commitment. It must be applied with intention to the books you’re gonna want to read, the new sources of news you will consume, who you follow on socials, the petitions you sign, the causes you will donate to, the businesses you support, the conversations you need to have with your non black friends and family, your bosses, your employees etc. BE ACTIVE, LIVE ANTI-RACIST.
Addressing her listeners, she said: “I want to say to our black listeners, I hope you feel seen and heard today.
“And to those of you that already let me know you are doing the work to be committed to doing better, I see you, so let’s do this. Let’s all be anti-racist.”
Earlier in the day Amfo joined the “blackout” by sharing an image of a black box on her Instagram account, asking her followers to “really take some time to think about the impact black people and our essence have had on your life”.