The very first thing to do would be to controll the people that claim to represent Islam. As long as any group is perceived to be violent, racist, and criminal because of the people that represent it, other people will continue to see it that way. You can't burn down a man's house, and rape his daughter, kidnap his wife and torture his son on T.V. and expect people to understand your "good side" Your religion as a whole needs to excomunicate the criminal faction, and refuse to allow them to call themselves followers of the true islam. Seperate yourselves from hatred and violence! That is the only way to swing public opinion to your side.