Im not a fan of kneeling during the anthem for any point trying to be made. If I agreed with them 100% with what they were trying to protest, I would still say you should find a better time to do it, its just bad optics all around.
Honestly though the thing that bugs me the most is turning entertainment into politics in general. I tune to entertainment for a 2 or 3 hour getaway from that stuff. Sometimes I just need stupid crap to entertain me for a few hours. I dont want to go to the movies to go watch the Avengers then right after the Marvel logo shows, some of the actors make a promo for the NRA and they show it. Im for the NRA, but Im going to the movies to get an escape from that stuff. If they want to go on CNN/Fox/MSNBC/Dateline use their social media as their platform to talk about that stuff, Im all for it even if I dont agree. But Im not tuning into football to hear about what players are protesting what this week. Im tuning in to escape and relax for a couple hours. Thats kind of the whole point for mindless entertainment.