I haven’t seen the mural you’re talking about yet but I’ll stop by one day.
When I was in Mexico City, I went to see the Diego Rivera murals. I had a wonderful Spanish speaking guide (they are volunteers at the National Palace) who was very patient with me as my Spanish is not the best. I was emotionally drawn into the murals and I could feel the struggles of the people through history. It was a very visceral and touching experience for me.
Then in the afternoon, on the Zocalo, there was some political protests. Older leftist activists were giving the standard speeches on the struggles of the proletariat. Suddenly, a young student in the audience asked if he could come up and talk. That “joven” spoke so beautifully that I had tears to my eyes.