Everyone is aware that the United States of America is mostly made up Christians, which is true. But do you know what the second most popular religion is in each of the states? Well check out this map. Look at Islam! See how far spread it is? You also have Buddhism that quite a practised religion having more Buddhists than there is Jews in California. It would also seem that Arizona has captured many Hindus, go figure.
As Islam grows and many start to convert, the need to enlighten the masses about Islam will definitely be needed even more-so than it is done now.