First off, let me say i acknowledge that you are ok with open carry, I am not ignoring that line in all your posts. I don't want this to sound like an oc or cc is better or worse. I want to focus on this specific reason, which we can call "the hood", if thats ok.
I can see where there are basic understandings of business. Call them rules, sure. But the violent behaviour has no rules to it, as you said, they will kill for the fun of it. Open or concealed, doesn't matter.
As far as ladies in the hood, what about gentlemen in the hood. Any level headed gun owner would not find themselves in a drug ridden violent hood anyways.
As far as EMT and firefighters. I can not say 100% for sure how every department in your area works. I do know they try to nationally train all EMT's and Fire Departments the same. It goes like this:
1: Is the scene safe? (If the answer is yes, move on, if the answer is no, you say, "I will park my vehicle at a safe distance until police have arrived and cleared the scene.)
2: BSI (Body substance Isolation ie: gloves, glasses, gown, etc etc depending on call) for my crew and I
If you don't say those two things before ANY national test scenario you fail. If you enter a scene that is unsafe, you fail. If you forget to mention BSI, you fail. If you are in a scene, and it becomes dangerous and you don't immediately leave until police arrive, you fail.
I won't say EMT's and FF don't jump the gun on some scenes, but I highly doubt EMT/FF go into the hood without police (fed for your hood) escort. More importantly, the reason they get attacked is completely different anyways. They get attacked because most druggies feel anyone in a uniform will try and arrest them. As a paramedic we are trained for this exact scenario when we give Narcan to an narcotic overdose patient. Or when we have to deal with people who have stayed with an overdosed patient, they do not like to talk to uniformed people because they believe we will arrest them. We have to convince them to talk to us, tell them we are not there to arrest them, so we can help their overdosed friend. We are trained to slowly get them back to consciousness, but to be ready for them to freak out because we are in uniform and they will think we are arresting them. Key words, arresting. Police do it, EMT/FF are seen as having that authority, and gang members and druggies do not want that. They don't attack the random person walking by because they think he/she is going to arrest htem, they attack them for other reasons as you mentioned, or no reason at all.
I wont disagree it's not smart everywhere either. I haven't read anywhere stating it would be smart to carry in such places. BUT such places make up such a tiny percentage of places the average citizen goes, saying it's only "certain" scenarios is overestimating the chances of being in the hood, an underestimating the effectiveness of deterrance. I wouldn't want to open carry in Mexico, the middle east, mainland China either...i wouldn't want to go there in the first place. I don't make my choices off that 1% chance. I make my choices off of what I think will work 95% of the time. That 5% includes the hood you speak off and its easily avoidable.
I tell you this, I do not know ghetto culture. My parents blessed me with a life outside of that society. I do know, that culture makes up less than 5% of the population, and it's going to effect my life even less than that because I actively choose to avoid those places.
I want to reiterate that point I feel is the most important. I make my choices based on what I think will work at least 95% of the time. The hood accounts for less than .1% of my entire life, therefore it doesn't dictate my decision.