The Boycott isn't going to affect any NFL team
Why ?
The team already has the fan's money in pre-season sales; if you leave the stadium, somone else will take your place ! (no effect)
Where the money is in NFL teams is television rights; it's where the teams really make their multi-million dollar$ money.
Complain to the network sponsors; threaten to boycott their products; call the sponsor and write them !- now you affect their money streams"!!
The teams could care less about the individual fans, ..but threaten their "money streams", and they will respond.
The network sponsors is where the NFL money comes from.
Those are TV ratings - what I'm saying is, don't watch and advertisers will want to renegotiate terms.
Also, I read somewhere the TV revenues really affect players and not owners. The TV revenues go 100% to player salaries - or so I've heard.
The biggest sponsors seem to be (just by my observations) viagra, cialis, Anheiser Busch, and Dodge / Ford / Chevy trucks. I think the ones most likely to fear a "middle america" backlash would be the truck makers, as people who buy those trucks generally don't live in Manhattan or San Francisco.
So a campaign telling those companies that they are on the "no buy" list as long as they support the NFL while these anti-american protests are going on might get some attention.
When we collectively turn it off, the sponsors will pay less for advertising time.