1) Your use of 'moronic'  & "nonsense" was quite uncivil.

2) Many human beings are Yanks. You happen to be one of them. Read your posts.  Only a Yank could write them.

3) Killing Jews was not legal under German law.  Hitler did it secretly and illegally.

4) More than 600,000 people were needlessly killed because of scofflaws like you.  The US Constitution was crafted to permit legal, non-violent change.  Segregation laws were changed peacefully by the 1964 Civil Rights Act.
If abolitionists did not like slavery in 1861, they could have gone to auctions and bought the slaves' freedom. John Brown is a good example of the Yank hero, a murdering psychopath who could not follow the law;  the consequences were tragic.

5) Cite the Constitutional passages in 1861 proscribing secession & slavery.  You can't.

6) You are in denial about Dred Scott.

7) Any motive which does not fit your agenda is "irrelevant."

8) Lincoln's disregard of the law was the main cause of the War.

Deal with it.