I think you're severely undercutting the affect it can have when one is accused of being a pedophile. It can ruin your entire life even if it's discovered to not be true immediately. Once it's out there it's pretty much impossible to remove.
Thanks to the society that tears everyone suspected and doesn't mind reporting or judging on minor crime feelings. I see what Ubik tries to bring to this thread, but noticed years ago that cultural differences effectively disallow that sort of communication.
In simple words: Social justice over real justice. It is $subj's society that is wrong, not police officers.
Police CAN do mistakes and WILL do them and they can take LONG time to fix. That's because police does actually a lot of work instead of doing nothing. It is okay to spend few time in PD for everyone. It is okay to be suspected, because every crime has several suspects, filtered out by evidence collected over time. It is also okay to take a compensation for your time and inconvenience.
What is NOT okay: to live in stupid society that does ruin your life when you're charged.
Single data point, but pretty common in my country: I was locked for 4+ hours so many times in my life that I cannot remember the exact count. I was suspected at least in stealing things, threatening and robbing people (well, I did things, but nothing of that). Sometime you get half-day off because an investigator asks you out on a date. It is no big deal at work and many relatives make jokes on that.
But for $subj people I am probably a monster. Their laws and principles exist in theory, but do not actually work because of themselves, not because of database records.