“The old system before where ‘a person is innocent until proven guilty’ seemed more fair then the recent concept that ‘a person is guilty until proven innocent’”
But this has not changed. What you need to realize is that the presumption of innocence applies at trial; that’s why the state must prove it’s case beyond a reasonable doubt rather than making the defendant prove innocence at trial. It has long been the case that arrest records were made available to the public. In one of the towns I grew up in, the local paper has published all arrests, traffic tickets issued, and the like for decades. This of course occurred much more often in small towns, where the local newspapers print everything that happens to fill space. But even in larger towns, if people wanted that information, they could go to the city or county courthouse and get it. People have always been free to assume someone was guilty just from being arrested and charged even though they were not convicted, although those that understand much of anything about the process won’t do that.
What is different now is that the computer and the internet have made these records much more accessible. You can now find records like this from the comfort of your own home rather than going to each courthouse in person and the search can be done in seconds instead of hours. Not all places put this information on-line, so getting this information is still a little bit hit or miss, though.
However, note that the background checks that employers get from police departments do NOT include the arrest information, only convictions.