Life's not all roses

A week on from my sister-in-law's funeral, and still feeling the shock of her unexpected death.
This is the rose bush near our front door, covered in brilliant yellow-tipped red roses a while ago, but here's the last bud of the year.
Goodness knows what's going on here, some kind of confrontation between tiny white flies and tiny black flies - or are they spiders ? I didn't hang around to watch, but the concept of beauty spoiled seemed to fit today's mood.