Is it time to start calling out bad cyclists?

The other day some dude spat over his shoulder a gobbed right on my chest as I was over taking him.
I understand it was not intentional and didn't react with anger or aggression or anything, just gave a bit of a "woah" noise.
He stared at me blankly, so I said "the least you could do is say sorry".

His response - "fuck off, I spit where I want"

I was sorely sorely tempted to say "me too" and greb a fucking greeney right in his face.

people are by and large, utter cunts. next time spit in his groin. with your knee.