Bush41 was never known (to my knowledge) to have been scared of assassination; Jeb Bush is the most like his father, in regards to respect for every individual; Obama clearly didn’t seem to fear his assassination; he knows he’ll die a natural death.
Then, didn’t Andrew Jackson remove the American Indians because they had stolen property?
Was Andrew Johnson (#17) a less evil president than Lincoln? Did he let Reconstruction fail because he knew the people doing it would just fight each other?