The arguments that people use to say that pitbulls are inherently violent are the same as the arguments that were used to say that black people are inferior or genetically distinct to white people, which have been scientifically proven to be false. Research has shown that intelligence, personality and behaviour cannot be traced back through genetic lineages because the imagined distinct lineages do not exist.

The same is true for pitbulls, while the breeding that was done to create pitbulls could have resulted in distinct personality features, the assumption that these features are still present in modern pitbulls in unscientific. Most modern pitbulls are mixed breeds and are characterised as pitbull by their appearance rather than their personality. So at this point there does not exist a “lineage” that defines the personality of a random pitbull, as its lineage is so diverse.