Therefore, by a simple and clear chain of logic, setting bail based on prior events is also biased.
An alternate answer would be: do you really think that there is bias everywhere ELSE in the system, but not in bail?
Of course not.
And, if you look, you find papers like this:
https://link.springer.com/article/10.1007/BF02885913
We found that judges take gender, but not race, into account in determining the amount of bail for certain types of cases; more specifically, Black females faced lower bail than Black males in less serious cases. In contrast, we found that both race and gender affected the likelihood of pretrial release. White defendants were more likely than black defendants to be released pending trial and females were more likely than males to be released prior to trial. In fact, white females, white males, and black females all were more likely than black males to be released.