You shouldn't have to apologize. When the KKK kills black people, people aren't asking for an apology from white people. People should never have to apologize for the actions of someone they didn't know. Besides, people who hold prejudice against Muslims are ignorant. I may not be Muslim, but I have educated myself on certain verses of the Quran. Anti-Islam people often quote 9:5 and say, "This explains why Islam is not peaceful." I did my research and those people are buffoons. 8:61 and 9:4 (the verse that precedes the very verse that they quote) prove that Islam is a religion of peace and is capable of coexisting with Christianity, Judaism, Hinduism, Buddhism, etc.