I think the best answer to the OP is a book by L. Neil Smith called, "The Probability Broach".
I highly recommend it.
http://northamericanconfederacy.wikidot.com/the-probability-broachThe ostensible point of divergence leading to the [differences between our current reality and that in the other dimension] is the addition of a single word in the preamble to the United States Declaration of Independence, wherein it states that governments "derive their just power from the unanimous consent of the governed."
Putting aside violent crime for a minute, can you imagine what traffic would be like if everyone could drive whenever and however they liked?
so says someone indoctrinated into a society where no one is responsible for their own actions. in such a world, each person would be completely and totally responsible for their actions (no "insurance" to shift the burden elsewhere, etc.). you commit a crime (which has now become limited to harming another or their property) and you (solely) make restitution. inattentive drivers? not after the word gets out that those people no longer can't drive but also had to sell everything they own to pay for the harm they caused.
you then expand that affect outward to more than just driving.