It was right for the antislavery supporters in Kansas to start a rival government?

The antislavery supporters in Kansas were justified in starting a rival government as a response to the violent and undemocratic actions of pro-slavery factions, particularly during the period known as "Bleeding Kansas." Their establishment of a separate government was an expression of their commitment to uphold democratic principles and protect their rights against the imposition of pro-slavery legislation. This grassroots movement highlighted the deep divisions within the territory and the urgency of addressing the moral and political crisis surrounding slavery. Ultimately, their actions were part of the broader struggle for civil rights and social justice in America.