Activism is an action to make a change, or stop a change, in society. It can be trying to make a government change its laws, or trying to make people change what they do. There are many forms of activism. Activism is most associated with protests.
Activist demonstrative forms of activism includes rallies, street marches, strikes, sit-ins, or hunger strikes. When activism is linked to art, the action, in street art is called artivism.