Are Christians making any difference?

We are praying this week for the peoples and churches in Brunei, Singapore and Malaysia. As Holy Week begins our colleague Dr Manoj Kurian prepared a liturgy for which he wrote music for a Malaysian version of the Orthodox acclamation of the gospel - using the in recent times much contested word "Allah" to refer to the trinitarian Christian God.
In his sermon on the suffering servant from Isaiah Manoj asked us whether the more than two billion Christians in today's world were making any real difference. "We conform so often to what Christ was against rather than try to find new ways to transform society". Just like the people who celebrated Christ's triumphal entry into Jerusalem on Palm Sunday, we need to ask ourselves what kind of Messiah we are expecting, just a new king who'll sort out all our problems or someone working to a different set of rules, a new system of renewed relationships as opposed to the systems of the world that push the poor to the margins.
Manoj went on to plead that to follow the way of Christ the suffering servant we we should see our service as part of our worship and see God in each other.
So are we Christians making a difference or would the world be just the same without us?