Simplify the following text for a Grade 8 native English-speaking person.
Original: The first use of the word `` Sith '' is in the Star Wars novelization for Star Wars Episode IV : A New Hope , as a title for Darth Vader , the `` Dark Lord of the Sith . ''
Simplified: The Sith live to dominate all others and to cause pain and suffering throughout the Star Wars galaxy . Some famous Sith are Darth Vader , Emperor Palpatine and Darth Maul .