Dr. Martin Luther King Jr supported non-violent protest.
For example the Albany movement where Dr. King and peaceful demonstrators were all jailed. Later on they are freed from jail. The Birmingham campaign where protests were held against businesses that only hired “White” Anglo-Saxon Americans or had segregated restrooms. These protests would include sit-ins and marches, which would get them jailed. Dr. King encouraged the nonviolent protest in order for the jails to overflow.