They are called pilgrims because they make a pilgrimage to their recognized 'holy' sites.
Religion is not harassing people in reality,it is so called leaders are harassing people in the name of religion.
Islamic people (Muslims) travel to Mecca on pilgrimages
Jews religion is called Judaism.
Migration is cause of spread of religion. As people travel they bring along their religion, and the constitution does not prevent them.
Tecnically, the religion is called Islam and the people that follow the Islamic religion are called Muslims, so yes, being a Muslim counts as a religion.
People who follow the religion of Islam are called MUSLIMS.
What is now called indigenous religion
Christians.
Muslims
Jews
Muslims
Buddhists.