When the cop did come, I explained everything to him and we went out to look at my car. The rear driver's-side window was completely smashed in, all the compartments were open, all of my stuff was all over the floor and seats of my car, etc. Thankfully, he didn't steal anything. However, because he didn't actually take anything, apparently this didn't count as a crime (the cop said it was just "mischief", whatever that means). The cop didn't even write down the description I gave of the guy (although I did write it down in my statement), and they didn't take any evidence from my car even though the guy had been BLEEDING and there were blood smears on the steering wheel and BLOODY (very clear) FINGERPRINTS on the handles of my doors, and it had been raining and it was a dirt parking lot so there were footprints on the floor. To top it off, the cop didn't even give me his name, had me fill out the witness statement using my knee as a table while he went to get a coffee from our cafeteria, and when I asked about the blood and the broken window, he told me to "just take it home and figure it out. You probably won't even need to file a claim." Needless to say I took some latex gloves from the cleaning department to drive home that night.
Yeah, I realize that catching petty thieves isn't a huge priority, but come on!
tl;dr - My car was broken into but this isn't a crime, and fingerprints and DNA are not evidence.