Former police-union president charged with raping underage relative over five years

Bail is set to ensure appearance for trial.

It is not a "pre punishment" for alleged crimes. It can be revoked if there are prior convictions indicating dangerousness or a clear indications that an accused person is making threats, but is not supposed to be used to punish people not yet convicted.

See also:
presumption of innocence
Fifth Amendment

Even though a lot of cops seem to think that they get to make their own laws, and this guy perpetuated the notion that cops can't be punished for anything, these are the laws that apply to them even when accused of heinous crimes.