Ok, of course I know IANBU, but I'm literally shaking with anger and need to vent.
Not only did this guy take my sister's bag but he also did it to someone else just before her. This was in broad daylight but in an alley on the way to her nursery. And both times he grabbed hold of the buggies they were pushing and started to shake them so they were too scared for their DCs to even try and fend him off. He's clearly deliberately targeting mums with young babies. What a cowardly, despicable arsehole. I am so furious for her.
Luckily she had hardly any money on her.