NBA has a rule about standing for the Anthem.
I would like to see what happens when some basketball players take a knee.
Anyone know if baseball has a similar rule.
Individual teams have rules, some very strict. The league does not have a rule, AFAIK.
MLB is 25% foreign-born than with very few from Mexico, and is less than 10% American black. Players generally spend minimum time in college. America-hate is not normal among MLB players.
Disrespecting the anthem has happened in MLB, but not for overtly political reasons. Players and teams call out offenders.