It has to do with bail being viewed as "letting criminals go free". If there is a high conviction rate, then most of the people being arrested are eventually fo

It has to do with bail being viewed as "letting criminals go free". If there is a high conviction rate, then most of the people being arrested are eventually found guilty, and I would expect bail being viewed less favorably there. On the other hand, if conviction rates were low, it would mean the police were arresting a lot of people that did not break the law, and I would expect bail to be viewed more positively.