Is Islam a religion?
This question is regularly posed by populists seeking to restrict Muslims in America. If Islam is not a religion—if it is a militant ideological system, for example—then some argue it is not subject to First Amendment protection.
At stake is the protection of religious liberty, writes lawyer Asma T. Uddin in When Islam Is Not a Religion: Inside America's Fight for Religious Freedom. Her new book details recent legal cases involving Muslims, arguing that restrictions on one faith community affect the freedom of all.