Sorry this happened to you, I know the feeling of being burglarized, twice to my cars(not robbed). You may want to talk to the police commander about this and let him know what happened, the other two cops may have just brushed it aside. It doesn't sound like proper police procedure in my experience, as a former USMC MP circa 1986-1991 and with a A.S. in Law Enforcement. What your describing is more like burglary, then robbery, in robbery you have to be physically present and have the items taken from you by intimidation or force. Burglary or/breaking and entering is when your not present and they break into your place, which is what happened.
I'd contact the watch commander, and see what he says about these two other cops who brushed it aside. Hell, if the watch commander brushed it aside, I'd even report it to the chief of police and mayor, with a written letter, saying what a <beep-beep>police dept.(ie. of course not cursing the police dept, may have to do a second letter, to clean up your frustration from the first letter, and send the second letter), NOT CURSING THEM, but do write a stern formal letter that they would not even do a police report, A CRIME DID OCCUR in your property, so you want it properly documented, and spread the word that your local pd, does not really do their job properly, reputation goes along way to correcting stuff in the long run, even if its minor stuff, word does get around, by word of mouth, sooner than later.
The pawnshop is my second lead, and third lead, is that the perps sold it hot to somebody else, or fourth, their using it for themselves.
You may want to invest in "Force Protection or FP" as what we would call it in the military, or physical security. Wrought iron door screens and iron window bars, since the perps may hit your place again, since they know the lay of your pad, and maybe your schedule, or at the very least, a home security alarm system, or at the very least, home security stickers pasted in your windows or yard banner (ie.as a bluff), where the perps can see it. I always vary my routes, to/from work/home, have two dogs, wrought iron screen doors, good lighting at night and window iron bars. Then again, I live between Compton and Watts, and have lived in the greater metro Los Angeles area for over 20 years, so I know what I talk about.
Stay safe and be prepared.
P.S. You'd be surprised how therapeutic writing a letter is, to get out your frustration and worries, in times of crisis, even if you don't send it to anyone, and only you know, and then burn it, it works.
