Civil Disobedience

What do we do when the government tells us that we must turn in people who are of a certain ethnic group so that they might be killed? Do we adhere to scripture that tells us to be obedient to the governing authorities or do we adhere to scripture that tells us that we should not murder? Are we sinning regardless or can we choose. In the 1940's the Ten Boom family along with others help hide the Jews who were being hunted by the Nazi army for extinction. They lied, they stole and the disobeyed direct orders from their occupied government. This wasn't just in Holland, but many German Christians also hid Jews to protect them. Were they right or was this a lack of faith?