How did people feel while being in concentration camps?

trapped

because they did not have freedom and they were malnourished the answer is  trapped

Well it depends on where and on what time but the majority of people feel very depressed and hungry. In most concentration camps there are rarely any food for those kept inside and they can be very upset too b/c they could be starving.

Explanation:

china unilaterally claims the entire south china sea as sovereign territory, then builds artificial islands to bolster its claim. it suddenly activates an air defense identification zone over the east china sea, and threatens to down any aircraft that does not report its position. it builds roads into indian territory, then redraws the maps to show that it is actually chinese territory. the people's republic under president xi jinping is quickly becoming the bully of asia.

oil! is what i am assuming