In modern times, Lincoln would be prosecuted as a war criminal.
In modern times, you replace ‘Lincoln’ with ‘Obama’, you can’t touch him, and his actions either go unreported by mainstream media, or are blasted all throughout the media, depending on whatever action it is.
In modern times, Jeff Davis would have been executed. Lincoln was not prosecuted, but rather murdered, as noone in the country would have stood for someone who could retain the degree of liberty that he did, given a horrific insurrection launched for the horrific cause of slavery.
The murder of Lincoln was not a popular act, but rather, an acknowledgement that opposition to Lincoln was limited to a vanishingly small minority.