Police can detain a suspect for 48-72 hours (depending on the state) without filing charges. Note that this is before any judicial scrutiny occurs: I.e., not only are you (supposedly) presumed innocent, but you have not even been indicted and the prosecutor has not even decided whether to seek an indictment. So the standards for detention are extremely low.
Furthermore, there appears to be no consistent right to communicate with anyone during detention. You can demand a lawyer if you are interrogated, but the police could instead choose to simply detain you without questioning.
It seems that the consequences of this to the detainee could be disastrous: Imagine you're a single working mother snatched by the police during your lunch break. Your employer and/or clients don't hear from you for 3 days. Your babysitter can't reach you when you fail to return home at the usual hour. You may miss deadlines for financial matters that could incur enormous direct costs.
Do all of these costs have to be born by the innocent individual?
Does the state have any obligation to care for your dependents while you are detained?