Should we help strangers ? I think the question is easy. The answer is : We should in most situation.
in most situation, we should
With the development of society, people appears (some like)删除 indifferent in public. (Some)删除 sad events happened everywhere from media('s) reports. The sociey need(s) love and responsibility than ever.
We all come across some trouble things sometime in our life(lives). We need help at that time. On the others(') point of view, when someone is in crisis, we should provide helps. For example, a stranger had a heart attack in public, we should call “120” to the hospital.(120打不到医院)
As a song said(sings) : If everyone send(s) (his)删除 kindness , the world would become (more)hamony. So I think we should help strangers.