Students at Yale Law School’s immigration rights clinic are used to making an impact. Some went to court to challenge the actions of federal immigration agents who were accused of conducting illegal raids. The students were able to halt deportation proceedings against some immigrants.

Now the students are taking on authority figures again — this time, the East Haven, Conn., Police Department, which has been accused of targeting immigrants. The clinic conducted research and sent findings to the U.S. Department of Justice, which launched an investigation leading to the suspension of police Chief Leonard Gallo.