Chris has it backwards. Blacks stopped watching, and now they’re not playing. It’s something the MLB has been trying to figure out for a while, losing a major demographic is hard on the receipts.
Clearly, the increase in Hispanics in the major league to 30% is the reason for the demise. Afterall, white participation has not changed. So as Hispanics replaced Blacks in baseball the game became less hip and young people do not like the game anymore because it is filled with hispanics.