Complete the following sentence: The national student sit-in movement began with the
Greensboro sit-ins in North Carolina several months later.<unk> Greensboro sit-ins in North Carolina several months later. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Robert F. Williams led a successful sit-in campaign in Monroe where, he reported, no racists dared to attack his group because it was well-known his use of nonviolence was strictly conditional.<unk> Robert F. Williams led a successful sit-in campaign in Monroe where, he reported, no racists dared to attack his group because it was well-known his use of nonviolence was strictly conditional. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ This led to a citywide clash covered nationally as "Axe-handle Saturday" where dozens of blacks and whites were injured in August 1960. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Doug McAdam cited "Axe-handle Saturday" as an example of the specter of violent crisis that loomed over lunch counter sit-ins in general, finding that the threat of escalating chaos pressured authorities to make concessions.<unk> Doug McAdam cited "Axe-handle Saturday" as an example of the specter of violent crisis that loomed over lunch counter sit-ins in general, finding that the threat of escalating chaos pressured authorities to make concessions.