Dear Marshawn :
Congratulations on your decision to mix politics and the politically correct with your decision to sit during the National Anthem section of an Oakland Raiders (NFL) match. Imagine if an Iranian football (soccer) player doing that during an opening ceremony with their national anthem.
The only thing I can say is that this is your right to disrespect the flag but there is a caveat. We have the right to turn off the TV, Internet, and stop consuming your products since we want SPORTS NOT POLITICS NOR POLITICAL CORRECTNESS!