my dear vamshi, if you dont know anything about prophet mohammad, then dont tell. Dont beleive what you listen from others about him or what you read in the books. Just because some muslims are talking about jihad and all does not mean that their master was wrong.
If a student fails in an exam, then nobody blames his teacher, if another student passes in the same class. In the same way,i would say negligible percentage of muslims in the world talk about Jihad and kill innocents. But if you have facts, then prove it. I am a Hindu but i really understand the preachings of Prophet mohammad.
And please just dont google in the internet to find about a person. I would say try to google your name , you will find lot bad about you, that does not mean you are bad.