Tbh its not a bad joke, could easily imagine a stand up saying that line...or she stole / adapted that from someone else, its a pretty standard / predictable line.
Also what is it atm with the police.... seem to be crashing into everything recently...local paper just ran a story about 3 police crashes in the last week, with members of the public seriously injured in one of them.
PS. Also how far can this PC stuff go? if you can't make a joke after any negative event, and with the internet and twitter being global then maybe 6 months of the year when something bad has happened across the world the rest of the world cannot joke?
Say the reasonable respectful period is 1 week after an event, then you only need 52 events per year and that is the end of jokes?
Need to push back against this 'how dare you make a joke, there has been a..crash/death/famine/war/tsunami/bomb/anything happened this week' PC attitude.