We have a process to get to a fair jury (fair meaning not biased to either side). When jurors lie to get on a jury, they are subverting the process. That is a pretty serious distortion of justice in my opinion.
So lying to be able to stop the state from enforcing the fugitive slaves laws would be wrong, lying to stop a couple from being send to prison for the crime of living together even those they are not of the same race is wrong.
Lying to get on a jury so the state could not send someone for decades in prison for having a small amount of drugs/weeds for personal use would be wrong?
Hell in my life time a married couple repeat a married couple have their door broken down an taken to jail in the middle of the night due to them not being of the same so call race.
As I said when and only when the state acted in an outrageous manner such actions may be both justify an needed,