This question seems to be incomplete. However, there´s enough information to find the right answer.
Answer:
The overall message of the poem is that freedom and safety are not only potentially temporary ("here we are free for a while"), but also everyone´s responsibility, whether we are directly affected or not.
Step-by-step explanation:
In "Elsewhere," by Derek Walcott, the Caribbean poet reflects on the oppression, cruelty, and injustice happening in many places around the world that are ignored by those not affected by them. In the final stanza, he states that the "darker crime", meaning what´s even worst than those crimes, is the lack of action by those who could act against such injustices. According to him, showing concern but doing nothing about it is making "a career of conscience."