Raging Grannies

The Raging Grannies (or just "Raging Grannies") are activist organizations that started in Victoria, British Columbia, over the winter of 1986/87. There are now groups in many cities and towns in different countries.
They are social justice activists, all women old enough to be grandmothers, who dress up in clothes that mock stereotypes of older women, and sing songs at protests. They typically write the lyrics themselves, putting their political messages to the tunes of well known songs. Their activism includes peace and environmental causes.