Violence:
* The Grangerfords and Shepherdsons feud: This long-standing conflict, fueled by generations of hatred and violence, tragically claims the lives of several characters, including Buck Grangerford and his family. The feud is a prime example of how violence becomes a self-perpetuating cycle.
* The Duke and the Dauphin's scams: The Duke and the Dauphin use violence, manipulation, and fear to swindle people out of their money. They intimidate a family by threatening to sell their daughter into slavery and even beat up a man for trying to intervene.
* The slave hunters: The pursuit of runaway slaves is a brutal and violent act, driven by greed and the desire to maintain the institution of slavery. Huck's own journey becomes a constant flight from these slave hunters.
* The lynch mob: The mob's violence against the innocent man accused of stealing a pig highlights the danger of mob mentality and the dangers of unchecked prejudice.
* The steamboat collision: Though not directly intended, the accident that kills Pap Finn is a tragic outcome of negligence and recklessness.
Greed:
* The Duke and the Dauphin's scams: Their motivation for their schemes is purely greed - they want to get rich quick by exploiting others.
* The slave trade: The entire institution of slavery is driven by greed, with slave owners profiting from the forced labor of enslaved people.
* Pap Finn's desire for Huck's inheritance: Pap's greed drives him to kidnap Huck and attempt to control him for his own financial gain.
* The conflict over land ownership: Throughout the story, there are conflicts over land and property rights, often motivated by greed and the desire for wealth.
* The Widow Douglas's attempts to civilize Huck: Although well-intentioned, the Widow Douglas's efforts to "civilize" Huck are partly fueled by a desire to mold him into a profitable member of society.
These examples demonstrate that *The Adventures of Huckleberry Finn* explores the dark side of human nature. The constant threat of violence and the pervasiveness of greed create a dangerous and unpredictable world for Huck and the other characters. These motivations contribute to the story's sense of realism and its exploration of complex social issues.