As I understand, arrest records (records showing that someone was arrested by police) are public in the United States, at least in many states (see e.g. Are Arrest Records Public?).
However, it seems to me knowing about an arrest objectively provides little useful information (at least much less than e.g. knowing about convictions), because many people are arrested without being guilty, and many people are guilty without being arrested.
At the same time, people are being discriminated against based on arrest records, to the point that there is regulation forbidding not hiring someone based on "an arrest, in itself" (Enforcement Guidance on the Consideration of Arrest and Conviction Records in Employment Decisions under Title VII of the Civil Rights Act ).
In that view, why are arrest records made public? Would the right to privacy and non-discrimination not obviously override the interest of the public to know about arrests?
Is there any discussion or any politician on record about why arrest records should be/remain public?
Note: Arrest records not being public is actually the standard in many other countries - for example in Germany, arrests are not even part of the criminal record (Bundeszentralregister), only convictions (and other official judgments) are.