B) Lenient
He didn't want to be so harsh, and knew they only were being mislead from the rich people making free labor off the slaves. Most of the confederates fighting hardly had slaves and barely shared any "racist pride". So Lincoln was Lenient.
To show the American people the Kennedy's family did not hold any ill will
Answer:
To begin with, one immediate effect of the riot was the loss of lives caused by both the hurling of the bomb and the indiscriminate open fire by the police in response. It is estimated that approximately eleven people died including seven policemen and an unconfirmed number of civilians.
Another immediate effect was the arrest of eight labor movement radical leaders who were arraigned and tried in court. Eventually, seven of them were slapped with capital punishment and one handed a 15 year jail term.
Also, the Haymarket riot sparked a deep sense of xenophobia throughout the country. Chicago newspapers incited the public against the anarchists by publishing the police version of the Haymarket incident and stirring sympathy for them.