The writer was(is) a prosecutor. These aren't hypothetical cases, these are actual things he experience and actual cases he tried. If it were a bunch of kids in a gang riding bikes to terrorize a neighborhood, I think he is probably the person most likely to be aware of that and the differences from his youth. I'm not sure you can challenge his authority on the matter and argue he just doesn't know whats really going on considering his position as part of the criminal justice system.

The writer is interested in pushing a narrative (one that I happen to support, just so that we are clear here). The dirt bike thing is slipped in with some other clearly unreasonable stuff, but I fear he is either stretching with the dirt bike example to pad out that section, or is aware of the problem but is giving those kids the benefit of the doubt an assuming that they had nothing to do with the dirt bike gangs.

Even if those kids had nothing to do with those gangs, riding dirt-bikes in a city is clearly anti-social behavior that needs to end. If there is a racial bias in the enforcement of those laws, that needs to end too, and the white kids need the book thrown at them too for it, but I really don't believe that the author use to get away with riding dirt bikes around in cities. That isn't standard teenager shenanigans.

This is the problem with black and white statements, there's always someone ready to jump in and prove there's middle ground. I am a well off white male and I've ridden a beaten up old dirt bike in the street plenty of times. Why? Because I like to ride off road, but you don't get to do that without tune ups, repairs etc. During riding season I am sure I annoyed neighbors with a weekly ten minute ride around a few blocks (and a large abandoned lot in my old city neighborhood). I even skip the helmet often during this so I can hear sounds as I diagnose a problem.

If you were doing that in a city, I think it would be more than reasonable for cops throwing the book at you. In underpopulated areas the concept of there being a victim starts to disappear, but you still should not be doing that.

"throw the book at you" should be applied to non-victimless crimes, not things that you just don't like or agree with. Misdemeanor? Ridiculous. Moving violation with a fine? That's fine, I accept the consequences of my actions when they are proportionate to the action.