Same as going postal except you do as a muslim does.

A Muslim is an adherent of Islam, a monotheistic, Abrahamic religion based on the Quran, which Muslims consider the verbatim word of God as revealed to prophet Muhammad. "Muslim" is the Arabic term for "one who submits to God".
Muslims believe that God is one and incomparable. Muslims also believe that Islam is the complete and universal version of a primordial faith that was revealed at many times and places before, including through the prophets Abraham, Moses and Jesus.

A follower of Islam.
That's basically it.
No more, no less.

Someone who follows Islam.

Widely and commonly misunderstood, Muslims have been dealing with bigoted and ignorant people long before modern events. For the people who gave you Coffee, Hummus, Clocks, Cleanliness, and surgical procedures, they surely are mistaken simply for a culture rather than a religion-when in fact Muslims thrive all around the globe.

Muslims are kind people but others think they are not. No one should be hating on Islam because if a terrorist is Mulum doesn't means all Muslims are terrorists. Please stop hating.

1. A follower of the religion of Islam.