[Dayshine]

>- keep moving at a firm pace

>- hold a hand up, palm outward, preemptively, as you move (I'm not a tourist, I work here)

What, push people out of the way?

And now that you've touched someone, they'll touch back...

[craigsmansion]

I didn't mean stretch your arm out for pushing, just hold your hand up to create some extra space in front of your face and signal you have no interest and you're in a hurry. It also helps avoiding eye contact.