How pardoning extremists undermines the rule of law

" I am a scholar who studies the individuals, groups and movements that use political violence. Research shows that this use of the pardon power can damage the rule of law in the United States. It undermines one of the tools against violence that law enforcement can bring to bear - deterrence. 

The American Bar Association describes the rule of law as a foundational principle for the U.S. justice system: "No one is above the law, everyone is treated equally under the law, everyone is held accountable to the same laws, there are clear and fair processes for enforcing laws, there is an independent judiciary, and human rights are guaranteed for all.""

https://theconversation.com/how-pardoning-extremists-undermines-the-rule-of-law-207272