Earlier quoted context omitted.
Protests have been regularly shown to let emergency vehicles through, I saw videos of this yesterday.
Except for the "Open States Up" protests that occurred that had hospital personal begging the protestors to let the emergency vehicles through. But that's a different type of crowd.
"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...