Question

I have to write a thesis statement on a topic I am going to write on my topic is Racism this is my thesis statement. How can I improve it?
Why did racism start, as we are all the same? The first step is to identify how racism started and why people are that way.

Answer 1

First of all, you need to narrow that topic down. Here are some ideas for helping you narrow your focus to a topic that can be addressed in a paper:
http://writing.colostate.edu/guides/processes/focus/list5.cfm

So ... what aspect of this topic do you intend to write about? Write up one sentence which states what you intend to prove -- eventually, this will become your thesis statement.
http://blog.eduify.com/index.php/2009/06/21/5-tips-on-how-to-write-a-strong-thesis-statement/
and
http://leo.stcloudstate.edu/acadwrite/thesistatement.html

Then be sure to follow the writing process completely.

Prewriting: brainstorm, research, plan, outline, thesis statement

Writing: write first draft by starting with section II of your outline; write introduction after the body of the paper is written; write the conclusion last.

Polishing: revise, concentrating first on the body of the paper, then the intro, then the concl (revision = making sure ideas are logical and sequential and support your thesis); proofread (spelling, grammar, usage, etc.)

http://www.angelfire.com/wi/writingprocess/

http://grammar.ccc.commnet.edu/grammar/
Check in the Essay & Research Paper Level.

Answer 2

Racism started the same way any "-ism" (e.g., sexism) started, by distinguishing between "us" and "them."

http://www.members.cox.net/dagershaw/lol/PrejudiceUsThem.html

I hope this added information helps.