I've written at length in this thread about how there are certain jobs where the professional just has to do his or her job regardless of the community reaction. I think the police are one of those jobs. So, when I see a poster write that he'd literally laugh at some community members being harmed because they didn't want police presence, I find that notion disturbing. I recognize that the poster finds the idea that there shouldn't be police to be dumb or stupid (and I think he's right), but I don't think that justifies a feeling of laughter or elation if a person or entire community later suffers because of a stupid stance or decision.
To express my disturbance, I decided to draw an analogy to something that I find to be "dumb" or "stupid" to the extent that it may be detrimental. For me, that decision is gun ownership (you can insert smoking cigarettes, over-consuming alcohol, doing drugs, or owning a pit bull, etc.) because, statistically speaking, one is more likely to harm himself or his family with the gun than the person is to use the gun to protect his family. So, cost-benefit-wise, owning a firearm is arguably "stupid" (like smoking cigarettes, etc.). But, I still would feel awful if that person or a family member were injured from that gun. In other words, I wouldn't be thinking "ha, that's what you get, stupid!" like the poster I was quoting seemed to be saying is how he'd react if a community suffered because they didn't want police.