Wiki-Monday: Social change

From Wikipedia: Social change 

Social change (that is not quite an equivalent of Social development) is a general term which refers to:

• change in the nature, the social institutions, the social behaviour or the social relations of a society, community of people, or other social structures.
• any event or action that affects a group of individuals that have shared values or characteristics.
• acts of advocacy for the cause of changing society in a normative way (subjective).