I would say Abraham Lincoln for what he did to the black people in America and specially because like all great men he had ennemies and he died assassinated.

Despite the take of revisionist historians, he preserved the Union under circumstances more difficult than any other president has faced.  Was he a saint?  No.  He was a very cunning pragmatist, who acted in what he saw as the appropriate way to defeat a rebellion and save the Union.

Did he use excessive means?  Absolutely.  Was he right to do so?  Not in all cases. 

But he had more cause than Bush did for the Patriot act. 

"Revisionist history" has turned Lincoln into a so-called hero. There was no "rebellion"...the south simply seceded....as was their Constitutional right. Lincoln's war was illegal by any and every measure...it obviously lasted more than 90 days...there was no Congressional approval....and there was no formal declaration of war. Our founding fathers mad clear in the Federalist Papers, the Constitution and in their own seperate writings that the power of the Federal Governemnt was derived from the states- not the other way around. Lincoln shat all over this, costing nearly 700,000 lives in the process.

Went against the Constitution to start a war and then played the race card when the North was losing. Delaware, Maryland, Missouri, and Kentucky still had slavery after the Civil War ended.

Who wouldn't love Abe Lincoln? He seemed like he was a very decent person, and helped to give black people well-deserved freedom and rights. That scores big in my book.