Running away from cops…is completely reckless in my opinion.

You’re blaming the mother.
She’s so desperate she had to steal childcare products. Things are going through her head like “the police will use lethal force”, and “who will look after my baby”. Of course she fled. She fled because she’s a human being in an incredibly emotional state trying to care for her children.
Completely understandable that she tried to escape. That’s why police get cars, to chase people who do. It happens a lot.
The cop, on the other hand, was at work and in charge of the situation, but murdered an infant.

By saying “this is the way things are, whether it’s fair or not, we all know the police might kill your kid”, you’re asking us to first accept that. And we absolutely should not.