Global issues maybe? Perhaps poverty, health & wellbeing or global warming / climate change
Underestimating people is a huge mistake. Often, those who appear to be innocent are everything but.
I think that it is "It reinforces the idea that without equality in the US, the idea of a free society is a joke."
I oppose Kaepernick's actions because he could do so many other beneficial things besides just sit down. He could donate to a multitude of organizations, etc. However, I support his cause.