Spread this around; remind the world that for every Nazi, there’s an entire train full of sensible people capable of basic moral behaviour. 

And reminder that sitting quietly means you’re co-sigining in a small way, and leaving it for the next group of people to see.  Get out your Purel and tissues, or be the person who says ‘Hey, hand sanitizer will get this off, does anyone have any?”*

*Be safe, of course, and work within your ability, but if you can, do.