I've cut down your post to the things that I think we can have a better discussion on.
I think there is a lot more nuance in whether a candidate is chosen for the diverse expreinces, perspectives, etc. that they bring. There are two main ways that "diversity" candidates are considered:
- Someone is chosen because of their identity, and that alone. Disregard all other attributes/qualities associated with the identity.
- Someone is chosen because of their identity, because that bring with it qualities that are associated with the identity.
Number 1 is the way that I think that conservative media and as you say, centrist Americans, are being messaged to. This way also works with progressives that don't want to think too long and hard about things. Number 2 is the way that I would want all candidates to be considered through. This takes more effort, and honestly, not everyone has the time/capacity to put in this kind of effort, leading to Number 1 being the shorthand that more would adopt. My critique of this would be that Number 2 is desirable (e.g. Trump choosing Vance, partly because Vance is originally from a working-class background and aids Trump's narrative), but Number 1 has been used, to totally ineffective and harmful effect, by both Democrats (thus fumbling) and Republicans (by attacking).
You would certainly know more about crime than me. I live in the PNW, so there's crime here too but a different scale to in SoCal. I don't want to derail too far into the policing debate, but I do want to just dip my toes in so far as saying, policing is hard. Some PDs are heavily understaffed. Some local policies mean that some crimes are "let off the hook". On the other hand, some LEOs are abusing their power in public ways (e.g. any reports of police brutality). Trust in law enforcement also suffers when understaffing leads to triaging in call responses. I think there is genuine need to reform police culture, for the sake of community safety and community trust. We likely disagree on this also, but I don't think the answer is as simple as "more hardline policing". Side-note: I do find it ironic and a real case of cognitive dissonance that a convicted felon beat a DA/AG on the issue of crime. Dems can soul-search for how they ran this campaign,
as well as the American public can also soul-search for what this means for the evolution of American values.
That last comment from me also somewhat responds to your last paragraph. If centrists or undecided voters are willing to dismiss Trump's continued rhetoric as locker-room talk, then centrists and undecided voters need to consider whether they want to stay in the same locker room as this guy. It's a nasty way to think about people, talk about people, and treat people. Another poster put it well - Trump's actions being given a pass like this signals the death of civility.
Things were bad and needed a change - who ever said that change needed to come from outside? Give the Democrats a chance to pull themselves up by their own bootstraps for a change