(You can read more about the different methods of nonviolent protest in Gene Sharp’s book The Politics of Nonviolent Action. Access CSA’s catalogue of Sharp’s methods here, or download the full list of 198 methods here.)
From Gene Sharp
Refusal of an Assemblage or Meeting to Disperse
A formal or informal meeting may demonstrate opposition by rejecting requests, whether official or not, to disperse. Sometimes, this technique is closely linked to non-obedience or civil disobedience with “illegitimate” laws.