This line of thinking must be severely confronted.
There's a third option. It is _your_ fault, meaning your commonwealth, your polis, your politicians, your city council, ...
The fact that so many cyclists and pedestrians get casually killed, is because roads are dangerous. They are only dangerous because of fast driving heavy cars. Slow down the cars, safely separate cars from cyclists with bollards, and this stuff ceases to happen so frequently.
In other words, our built environment needs to create virtuous conditions, rather than vicious ones.
We demand a virtuous environment from our factory floors, our theme parks, children playgrounds, ... but somehow, unfathomably, our public realm must be a Thunderdome, where death and injury is fully a personal responsibility.