I could only find two photos which showed obviously black people. In the photo above you can see a someone who from her legs appears to be black. She might not be an attendee. She could be a reporter. The other woman (insert lower right) is someone who I assume was hired by the venue to take temperatures. The man has his nose exposed and the woman is only wearing a surgical mask which protects him from her but not her from him.
This is what I posted on Twitter:
Mia Love is a speaker at CPAC 2021. She served as the a US representative from Utah from 2015 to 2019. She is a Haitian American who was the first black person elected to Conpress from Utah and the first black woman elected as a Republican.Wikipedia
Trump told his riled up crowd who were right in there in front of him to "peacefully" stop the steal of the election he said really won by going to the Capitol. Did he expect them to go down there and merely stand there shout their slogans outside the barricades and respecting the police?