I believe the correct answer is Bacon's Rebellion.
It was an event which happened in 1676 when lower classes rebelled against the system in which they were not being treated equally as the upper classes. This was the first rebellion of such nature and it lead to greater democracy in the States.
Well Industrialization began and both were receiving mass amounts of immigrants.
People were chained together.
People jumped into the sea to escape.
Some people were flogged unmercifully.