Hey Bhudda, Keep one thing in mind. Those who follow the truth, only will prevail. People following myths (u understand what i mean, afterall u r intelligent) are in illusion.
Non-muslims are often found using foul language against Islam and its Prophet. Whereas, neither Islam nor its followers talk filthy about other religions.
So, don;t worry too much. Ultimately, the guilty (irrespective of their religions) would be punished by the Almighty.