Thomas Jefferson. Now I just have to make this "at least 20 characters to explain it well". I'm not entirely sure how to explain Thomas Jefferson more though.
<span>He called it a reforming purge that was designed to help the
country. In reality, it was done to make room for his own party because
it was the spoil system in which the governmental positions would go to
party members, not to those who actually deserve it. During his first
term, he changed as much as 20% of government workers.</span>
C. The Iran Hostage Crisis