Why racism against all muslims?

It's out of fear, I think. Fear of someone different. Look at the history of th eUnited States...the Native Americans were feared, so they were killed...the slaves were feared, so they kept them illiterate, so they couldn't get smarter and get an education and they were abused and suppressed. Since 9/11, the media has made all Muslims appear to be hardened, evil people. I have met several people online, that disprove that to me. You can never judge a whole group of people by the color of their skin, or their beliefs. I wish society was more tolerant if differences instead of afraid of it~