Islamic policies are definitely to blame for Islamophobia and that is not hard to see. Islamophobia in the United States is characterized by a lot of distrust and hostility. You really can't blame Americans though because that is what is being given to them informationally like in the news on television and in newspapers. The network is the policies such as the way the dress and look and the religion they practice. As a direct result of the policies, they are singled out for being stereotyped. They are feared and hated.
If there was no policies like they looked and acted like everyone else, there would be less judgement passed on them. That is not to say it is right but if all terrorists had a 7 on their head, those who had a 7 on their head but were not terrorists would still be treated with suspicion and rightly so, really. You have to be careful when your life and your country are at risk and that is just common sense.