Researchers believes that a child who observes violent behaviours around him or her or in the televisions will start acting violently because this behaviours are reinforced over time.
This idea is supported by the Social Learning Theory which states that a child will act aggressively if exposed to aggressive behaviours over a long period of time, these behaviours become implanted in them and they will believe aggressive behaviours is the right response to certain conditions.
They imposed unfair taxes like the Stamp Act, and did not allow the colonists any representatives in Parliament. Also, they were occupied by British soldiers who they had to feed and share their home with.