"Despite some "confusion," Lansing police had no complaints about any ambulance being locked in traffic during an emergency, said Robert Merritt, a spokesman for the Lansing Police Department. When ambulances on non-emergency runs were in traffic, "rally participants slowly cleared a path," he said."
[1] https://www.detroitnews.com/story/news/local/michigan/2020/0...
(Fascinating trivia: California allowed open carry until the Mulford Act in 1967 restricted it -- directly in response to the Black Panthers practicing it. The Act was signed into law by Ronald Reagan, with the explicit support of the National Rifle Association.)
Edit: I mean, come on: https://www.youtube.com/watch?v=1eVPKpBKGCE
People have done tests with white people and black people open carrying in exactly the same way. Black open carriers got a very different police response.