Why did the southern extremists claim the north was weakening the protections of the constitution

The southern extremists claim the north was weakening the protections of the constitution because the vital issue of slavery was neglected by the north and the taxation procedure was not properly looked after by the north.

Explanation:

The southern extremists raised their voice against slavery as they suffered lot for it. They wanted to settle this issue or to abolish the system permanently. The north has not given much of the time on the issue of slavery as they were involved in the case of salvation.

Federal government had not overturned the issue of slavery. That's why South Carolina seceded more than other northern sates. South claimed that north were weakening the constitution and they were not taking care of the issue salvation.