You can donate to folks needing bail money and legal costs in Baltimore here. From the donation page:
The beating and murder of Freddie Gray by 6 police officers have tapped the outrage of the communities of color that have long suffered endless abuse by the Baltimore Police.
The people of Baltimore are protesting the epidemic of police violence in their community. One small way we can support the communities and families of Baltimore is to assert the right of every individual to legal representation. Every American has the right to due process and fair trial, but this has not been the case in Baltimore for too many, for too long. Please donate to this fund to ensure that every person arrested during this crisis, regardless of charges, has access to proper legal representation.