I'm a little reluctant to step into this snake pit, but here goes...
TL:DR: Retired police Lt. agrees that citizens should be armed as well as retired LEOs. Period. Here's why:
I was a patrol watch commander in the murder capital of Florida. I spent almost all of my career in patrol and have been on the 2-way range the whole time. I asked to work nights in the bad neighborhoods. I loved what I did. What I did was pursue the predators of good folks and lead others in that task. The police HATE bad guys and the vast majority LOVE the good guys and gals. Every job has it's exceptions, but I know more cops than most and the jerks are easily less than 10%. Probably just like your jobs.
Now I'm going to surprise quite a few of the cop haters: Typically speaking, if the police need it, law abiding citizens need it just as much. If the police firepower request is to be better armed than the crooks, why handicap the citizen who's there first almost every time? In fact, the armed citizen made my guys jobs a lot easier by eliminating the evildoer. If you ever want to see beat cops doing a fist bump, it's at a call where a citizen has punched the bad guys ticket.
As for retired guys, the law abiding citizen should be allowed equal access to defensive firearms and ammunition. The bad guys are no slower, softer, or less numerous or evil than those we run into. Limiting magazines for good guys is the last place ammunition or firepower should be rationed. Give the good guys the edge...citizen and retired cop alike. The situations they face are IDENTICAL, so should be their capabilities.
Active LEO mission requirements are a completely different animal and not what I'm talking about here. Unless somebody's answering calls or clearing meth labs daily I think they can appreciate the distinction. But for the vast majority of unplanned defensive engagements, there is no difference in threat, or potential for mayhem. Neither should be the ability for good folks to meet it.
Now, guys...don't let the other side win a moral victory by getting the good guys bickering. The reason the libs exempt the police isn't because they like them so much, they don't like us near as much as the conservatives do in real life. They do it because the unions are so powerful that the reason they exempt them from unpopular legislation is to avoid having the police take a counter position and swing the public against them. They remove their dog from the hunt. Some of the retired guys get used to being exempt and think it's a right or something. They have lost their perspective. Sad, because few know the constitution better than cops.
Most of us are with you 100%. We all took oaths to defend the constitution and understand very well what's going on. The 2nd Amendment right to bear arms guarantees all the other rights. They are rights, not privileges.