CLEAN : Nigeria's northern Christians worried over quit notice

The transcript discusses a tense situation where people are feeling threatened and are considering leaving due to fear of attacks reminiscent of past events. Long-term residents express their concerns and bitterness about the threats. The speaker is personally resolved to leave due to increasing harassment, which is described as institutionalized.

What precautions are people taking in response to the threats they face?

What does the speaker mean by saying the harassment is 'institutionalized'?