In addition to praying 2 rakat nafl on these occassions we should make it a habit to either volunteer at some hospital/school or distribute free food or adopt a child or pledge to bear education expenses of some poor child etc.
A good step taken by the DG Ranger that he adopt a child from footpath school and if we individually adopt a child and start bearing the expenses then it will be really effective and no child left orphan. There are several NGOs in Pakistan providing education, health, and shelter to these children to make them a good citizen.