How frequently could this happen in protest demonstration ?

The frequency of certain events occurring during a protest demonstration can vary depending on the specific circumstances and location of the protest. Some common occurrences during protests include chanting, marching, holding signs, and engaging in civil disobedience. These activities can happen multiple times throughout a protest demonstration, depending on the duration and intensity of the protest. Other events, such as clashes with law enforcement or counter-protesters, may happen less frequently but can still occur during certain protests. Ultimately, the frequency of different events during a protest demonstration will depend on the nature of the protest and the actions of those involved.