The inmates here are mostly violent criminals.

这里的收容人大多是穷凶极恶的罪犯。

Violent criminals like that are a danger to society.

这种暴力罪犯对社会是一种危害。

Violent criminals should be punished to the farthest extent, however, people who violate laws that pose no threat to the welfare of society should simply be punished through serving the community.

暴力犯罪确实应该判最长的刑期，但是那些因为对社会福祉不太有危害性的违法行为应该只通过社区服务进行惩罚。