Does "Serendipitousness" exist?

Probably as a result of not, regularly, taking the local paper: but we got downtown and were in the midst of it all before we knew it was on.
As is, usually, the case I was spoilt for choice again and settled, unilaterally, on this one which I caught by accident while gazing around through the lens. There it was charging at me ....

So I SHOT it.