A public display of group opinion, such as a protest march.
A proof.
Expression of one's feelings by outward signs.
The act of demonstrating; showing or explaining something.
A prisoner's act of beating up another prisoner.
An event at which something will be demonstrated.
A show of military force.
A sit-in, a protest of civil disobedience by people sitting and refusing to move.
An act of sitting down, especially with other people in some form of social exchange.
Intended to be done, used, consumed etc. while sitting.