Senator Gillibrand's office released a statement:
While this decision is shocking, I want to echo the statement of a wide range of leaders inside and outside of government who are urging that protests remain peaceful in the aftermath of this decision. The death of Eric Garner is a tragedy that demands accountability. Nobody unarmed should die on a New York City street corner for suspected low-level offenses. I’m shocked by this grand jury decision, and will be calling on the Department of Justice to investigate.
TPM
Many DOJ investigations AND INDICTMENTS of racist killer cops are needed. Police crimes are crimes and the Department of Justice is the only possible justice left.
Update I: Senator Schumer also. From ericlewis in the comments, a Schumer tweet:
The Justice Department must launch a Federal investigation into Eric Garner’s death as soon as possible. -cs
Update II: more from ericlewis0
DOJ to launch Civil Rights investigation into Eric Garner's death. (NBC 4 NY News)
I updated the title to reflect the additional news.