What is the risk assessment of terrorist attacks caused by Muslims versus non-Muslims in the United States? How does the risk assessment change when taking population into account?
Sure we remember the Oklahoma City bombing which killed 168 people. But since 1980 muslims have killed about 3200 civilians in  America (including 9/11) while non- muslims have killed about 200, including the 168 in Oklahoma.     Now in  order to assess risk, you have to take population into account - muslims are only 1% of the population and non muslims are 99%. Adjusting for this,   a muslim is more than 1000 times as likely to cause a terrorist death versus a non muslim.