Everyday, I watch my students during the Pledge of Allegiance, and only one out of 12 of them says the pledge with any consistency. That's one reason I showed the video clip of how soccer players and F1 employees were blacklisted after protesting the Arab Spring in Bahrain.
The video was surprisingly (for ESPN) intense: several scenes including possible homicides of protesters by government forces. After the video was over, I asked my students to construct a similar scenario for here in America. The most famous athlete in America going to jail for a protest and then having to play in a minor league.
I'm not sure it sunk in with all of my students, but I'm hoping that one or two of them take it to heart.