Cuban Baseball and Castro Experts?

[Jobu]

I have a couple of photos for which I'd like a bit of help. The first shows a young Fidel Castro in an Oriente uniform with players in Cuba and Canada uniforms with him. The second appears to show a group of students taking the field and getting into it with the umpire. I think the latter might be one of the 1951 student protests mentioned in the following SABR write up:

https://sabr.org/bioproj/topic/fidel...-and-baseball/

"During the fifth inning and with American Hoak occupying the batter’s box, a spontaneous anti-Batista student demonstration suddenly broke out (Hoak reported such uprisings as all-too-regular occurrences during that particular 1951 season) with horns blaring, firecrackers exploding, and anti-Batista forces streaming directly onto the field of play."

A bit difficult to say for certain. I would love some more information on either of the photos.

I did investigate the author of the SABR piece and unfortunately he passed away in 2018.