Storming the Bastille
The people of Paris were already angry at the shortages of food and fuel.
The poor people of Paris regarded the National Assembly as the only politicians who actually wanted to improve the poor peoples' lives and give them more rights.
And now the rumour spread that the king was sending soldiers to arrest the members of the National Assembly at the tennis court.
On 14 July, the Paris people went to the most hated building in the city: The Bastille. This was a prison where the king locked up his enemies.
An angry mob attacked the prison guards, took over the Bastille and freed the prisoners. They took control of the city.
The French Revolution had begun.
The Assembly was caught by surprise by the speed of events. They were in charge before they had even written a constitution. And the people of Paris were expecting them to make reforms and solve the problem of shortages fast.